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Finding the Fourth Proportional to 9,787,211.70, 13,730,439.90 and 9,787,211.70

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Solution

The fourth proportional to 9,787,211.70, 13,730,439.90 and 9,787,211.70 is: 13,730,439.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,787,211.70 : 13,730,439.90 = 9,787,211.70 : x
  2. Step 2: Convert to fraction form
    9,787,211.70/13,730,439.90 = 9,787,211.70/x
  3. Step 3: Cross multiply
    9,787,211.70x = 13,730,439.90 × 9,787,211.70
  4. Step 4: Simplify right side
    9,787,211.70x = 134,382,722,035,426.83
  5. Step 5: Solve for x
    x = 134,382,722,035,426.83/9,787,211.70
  6. Step 6: Final answer
    x = 13,730,439.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.