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Finding the Fourth Proportional to 99,692,209.60, 149,692,279.20 and 54,342,577.60

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Solution

The fourth proportional to 99,692,209.60, 149,692,279.20 and 54,342,577.60 is: 81,597,793.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,692,209.60 : 149,692,279.20 = 54,342,577.60 : x
  2. Step 2: Convert to fraction form
    99,692,209.60/149,692,279.20 = 54,342,577.60/x
  3. Step 3: Cross multiply
    99,692,209.60x = 149,692,279.20 × 54,342,577.60
  4. Step 4: Simplify right side
    99,692,209.60x = 8,134,664,298,546,865
  5. Step 5: Solve for x
    x = 8,134,664,298,546,865/99,692,209.60
  6. Step 6: Final answer
    x = 81,597,793.16

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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.