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Finding the Fourth Proportional to 7,872,248.70, 11,787,377.85 and 7,872,248.70

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Solution

The fourth proportional to 7,872,248.70, 11,787,377.85 and 7,872,248.70 is: 11,787,377.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872,248.70 : 11,787,377.85 = 7,872,248.70 : x
  2. Step 2: Convert to fraction form
    7,872,248.70/11,787,377.85 = 7,872,248.70/x
  3. Step 3: Cross multiply
    7,872,248.70x = 11,787,377.85 × 7,872,248.70
  4. Step 4: Simplify right side
    7,872,248.70x = 92,793,169,956,071.30
  5. Step 5: Solve for x
    x = 92,793,169,956,071.30/7,872,248.70
  6. Step 6: Final answer
    x = 11,787,377.85

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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.