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Finding the Fourth Proportional to 56,784,691.80, 85,177,037.70 and 56,784,691.80

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Solution

The fourth proportional to 56,784,691.80, 85,177,037.70 and 56,784,691.80 is: 85,177,037.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,784,691.80 : 85,177,037.70 = 56,784,691.80 : x
  2. Step 2: Convert to fraction form
    56,784,691.80/85,177,037.70 = 56,784,691.80/x
  3. Step 3: Cross multiply
    56,784,691.80x = 85,177,037.70 × 56,784,691.80
  4. Step 4: Simplify right side
    56,784,691.80x = 4,836,751,834,231,481
  5. Step 5: Solve for x
    x = 4,836,751,834,231,481/56,784,691.80
  6. Step 6: Final answer
    x = 85,177,037.70

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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.