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Finding the Fourth Proportional to 9,144,633.90, 12,785,691.30 and 9,144,633.90

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Solution

The fourth proportional to 9,144,633.90, 12,785,691.30 and 9,144,633.90 is: 12,785,691.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,144,633.90 : 12,785,691.30 = 9,144,633.90 : x
  2. Step 2: Convert to fraction form
    9,144,633.90/12,785,691.30 = 9,144,633.90/x
  3. Step 3: Cross multiply
    9,144,633.90x = 12,785,691.30 × 9,144,633.90
  4. Step 4: Simplify right side
    9,144,633.90x = 116,920,466,096,915.08
  5. Step 5: Solve for x
    x = 116,920,466,096,915.08/9,144,633.90
  6. Step 6: Final answer
    x = 12,785,691.30

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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.