Home / 28,033,349,646.78-38,686,019,388.84-15,172,987,411.44

Finding the Fourth Proportional to 28,033,349,646.78, 38,686,019,388.84 and 15,172,987,411.44

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Solution

The fourth proportional to 28,033,349,646.78, 38,686,019,388.84 and 15,172,987,411.44 is: 20,938,720,937.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,033,349,646.78 : 38,686,019,388.84 = 15,172,987,411.44 : x
  2. Step 2: Convert to fraction form
    28,033,349,646.78/38,686,019,388.84 = 15,172,987,411.44/x
  3. Step 3: Cross multiply
    28,033,349,646.78x = 38,686,019,388.84 × 15,172,987,411.44
  4. Step 4: Simplify right side
    28,033,349,646.78x = 586,982,485,185,593,016,320
  5. Step 5: Solve for x
    x = 586,982,485,185,593,016,320/28,033,349,646.78
  6. Step 6: Final answer
    x = 20,938,720,937.08

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.