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Finding the Fourth Proportional to 72,695,463.60, 109,043,195.40 and 49,737,212.40

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Solution

The fourth proportional to 72,695,463.60, 109,043,195.40 and 49,737,212.40 is: 74,605,818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,695,463.60 : 109,043,195.40 = 49,737,212.40 : x
  2. Step 2: Convert to fraction form
    72,695,463.60/109,043,195.40 = 49,737,212.40/x
  3. Step 3: Cross multiply
    72,695,463.60x = 109,043,195.40 × 49,737,212.40
  4. Step 4: Simplify right side
    72,695,463.60x = 5,423,504,570,384,503
  5. Step 5: Solve for x
    x = 5,423,504,570,384,503/72,695,463.60
  6. Step 6: Final answer
    x = 74,605,818.60

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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.