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Finding the Fourth Proportional to 106,389,793.80, 159,584,690.70 and 38,239,374.60

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Solution

The fourth proportional to 106,389,793.80, 159,584,690.70 and 38,239,374.60 is: 57,359,061.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,389,793.80 : 159,584,690.70 = 38,239,374.60 : x
  2. Step 2: Convert to fraction form
    106,389,793.80/159,584,690.70 = 38,239,374.60/x
  3. Step 3: Cross multiply
    106,389,793.80x = 159,584,690.70 × 38,239,374.60
  4. Step 4: Simplify right side
    106,389,793.80x = 6,102,418,768,102,436
  5. Step 5: Solve for x
    x = 6,102,418,768,102,436/106,389,793.80
  6. Step 6: Final answer
    x = 57,359,061.90

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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.