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Finding the Fourth Proportional to 86,202,490.80, 129,366,721.80 and 60,693,322.80

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Solution

The fourth proportional to 86,202,490.80, 129,366,721.80 and 60,693,322.80 is: 91,084,331.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,202,490.80 : 129,366,721.80 = 60,693,322.80 : x
  2. Step 2: Convert to fraction form
    86,202,490.80/129,366,721.80 = 60,693,322.80/x
  3. Step 3: Cross multiply
    86,202,490.80x = 129,366,721.80 × 60,693,322.80
  4. Step 4: Simplify right side
    86,202,490.80x = 7,851,696,205,785,196
  5. Step 5: Solve for x
    x = 7,851,696,205,785,196/86,202,490.80
  6. Step 6: Final answer
    x = 91,084,331.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.