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Finding the Fourth Proportional to 85,177,998.80, 127,766,998.20 and 60,991,528.40

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Solution

The fourth proportional to 85,177,998.80, 127,766,998.20 and 60,991,528.40 is: 91,487,292.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,177,998.80 : 127,766,998.20 = 60,991,528.40 : x
  2. Step 2: Convert to fraction form
    85,177,998.80/127,766,998.20 = 60,991,528.40/x
  3. Step 3: Cross multiply
    85,177,998.80x = 127,766,998.20 × 60,991,528.40
  4. Step 4: Simplify right side
    85,177,998.80x = 7,792,704,499,298,049
  5. Step 5: Solve for x
    x = 7,792,704,499,298,049/85,177,998.80
  6. Step 6: Final answer
    x = 91,487,292.60

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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.