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Finding the Fourth Proportional to 20,737,687.20, 31,050,543.60 and 20,737,687.20

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Solution

The fourth proportional to 20,737,687.20, 31,050,543.60 and 20,737,687.20 is: 31,050,543.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737,687.20 : 31,050,543.60 = 20,737,687.20 : x
  2. Step 2: Convert to fraction form
    20,737,687.20/31,050,543.60 = 20,737,687.20/x
  3. Step 3: Cross multiply
    20,737,687.20x = 31,050,543.60 × 20,737,687.20
  4. Step 4: Simplify right side
    20,737,687.20x = 643,916,460,566,761.88
  5. Step 5: Solve for x
    x = 643,916,460,566,761.88/20,737,687.20
  6. Step 6: Final answer
    x = 31,050,543.60

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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.