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Finding the Fourth Proportional to 71,317,490.80, 106,976,236.20 and 25,873,380.40

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Solution

The fourth proportional to 71,317,490.80, 106,976,236.20 and 25,873,380.40 is: 38,810,070.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,317,490.80 : 106,976,236.20 = 25,873,380.40 : x
  2. Step 2: Convert to fraction form
    71,317,490.80/106,976,236.20 = 25,873,380.40/x
  3. Step 3: Cross multiply
    71,317,490.80x = 106,976,236.20 × 25,873,380.40
  4. Step 4: Simplify right side
    71,317,490.80x = 2,767,836,852,962,850.50
  5. Step 5: Solve for x
    x = 2,767,836,852,962,850.50/71,317,490.80
  6. Step 6: Final answer
    x = 38,810,070.60

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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.