Home / 28,643,577,642.92-39,526,356,111.38-15,782,497,883.16

Finding the Fourth Proportional to 28,643,577,642.92, 39,526,356,111.38 and 15,782,497,883.16

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Solution

The fourth proportional to 28,643,577,642.92, 39,526,356,111.38 and 15,782,497,883.16 is: 21,778,865,735.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,643,577,642.92 : 39,526,356,111.38 = 15,782,497,883.16 : x
  2. Step 2: Convert to fraction form
    28,643,577,642.92/39,526,356,111.38 = 15,782,497,883.16/x
  3. Step 3: Cross multiply
    28,643,577,642.92x = 39,526,356,111.38 × 15,782,497,883.16
  4. Step 4: Simplify right side
    28,643,577,642.92x = 623,824,631,656,819,982,336
  5. Step 5: Solve for x
    x = 623,824,631,656,819,982,336/28,643,577,642.92
  6. Step 6: Final answer
    x = 21,778,865,735.06

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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.