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Finding the Fourth Proportional to 66,438,037.80, 99,468,099.90 and 66,438,037.80

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Solution

The fourth proportional to 66,438,037.80, 99,468,099.90 and 66,438,037.80 is: 99,468,099.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,438,037.80 : 99,468,099.90 = 66,438,037.80 : x
  2. Step 2: Convert to fraction form
    66,438,037.80/99,468,099.90 = 66,438,037.80/x
  3. Step 3: Cross multiply
    66,438,037.80x = 99,468,099.90 × 66,438,037.80
  4. Step 4: Simplify right side
    66,438,037.80x = 6,608,465,381,050,376
  5. Step 5: Solve for x
    x = 6,608,465,381,050,376/66,438,037.80
  6. Step 6: Final answer
    x = 99,468,099.90

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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.