Home / 18,516,686,561.87-25,553,729,849.90-10,378,640,393.01

Finding the Fourth Proportional to 18,516,686,561.87, 25,553,729,849.90 and 10,378,640,393.01

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Solution

The fourth proportional to 18,516,686,561.87, 25,553,729,849.90 and 10,378,640,393.01 is: 14,322,917,435.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,516,686,561.87 : 25,553,729,849.90 = 10,378,640,393.01 : x
  2. Step 2: Convert to fraction form
    18,516,686,561.87/25,553,729,849.90 = 10,378,640,393.01/x
  3. Step 3: Cross multiply
    18,516,686,561.87x = 25,553,729,849.90 × 10,378,640,393.01
  4. Step 4: Simplify right side
    18,516,686,561.87x = 265,212,972,812,185,632,768
  5. Step 5: Solve for x
    x = 265,212,972,812,185,632,768/18,516,686,561.87
  6. Step 6: Final answer
    x = 14,322,917,435.91

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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.