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Finding the Fourth Proportional to 101,952,862.80, 152,829,761.40 and 91,203,320.40

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Solution

The fourth proportional to 101,952,862.80, 152,829,761.40 and 91,203,320.40 is: 136,715,942.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,952,862.80 : 152,829,761.40 = 91,203,320.40 : x
  2. Step 2: Convert to fraction form
    101,952,862.80/152,829,761.40 = 91,203,320.40/x
  3. Step 3: Cross multiply
    101,952,862.80x = 152,829,761.40 × 91,203,320.40
  4. Step 4: Simplify right side
    101,952,862.80x = 13,938,581,695,619,754
  5. Step 5: Solve for x
    x = 13,938,581,695,619,754/101,952,862.80
  6. Step 6: Final answer
    x = 136,715,942.18

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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.