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Finding the Fourth Proportional to 91,597,811.20, 137,459,702.40 and 37,745,123.20

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Solution

The fourth proportional to 91,597,811.20, 137,459,702.40 and 37,745,123.20 is: 56,643,639.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,597,811.20 : 137,459,702.40 = 37,745,123.20 : x
  2. Step 2: Convert to fraction form
    91,597,811.20/137,459,702.40 = 37,745,123.20/x
  3. Step 3: Cross multiply
    91,597,811.20x = 137,459,702.40 × 37,745,123.20
  4. Step 4: Simplify right side
    91,597,811.20x = 5,188,433,402,123,336
  5. Step 5: Solve for x
    x = 5,188,433,402,123,336/91,597,811.20
  6. Step 6: Final answer
    x = 56,643,639.56

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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.