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Finding the Fourth Proportional to 9,904,890.30, 13,838,502.90 and 9,904,890.30

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Solution

The fourth proportional to 9,904,890.30, 13,838,502.90 and 9,904,890.30 is: 13,838,502.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,904,890.30 : 13,838,502.90 = 9,904,890.30 : x
  2. Step 2: Convert to fraction form
    9,904,890.30/13,838,502.90 = 9,904,890.30/x
  3. Step 3: Cross multiply
    9,904,890.30x = 13,838,502.90 × 9,904,890.30
  4. Step 4: Simplify right side
    9,904,890.30x = 137,068,853,140,731.89
  5. Step 5: Solve for x
    x = 137,068,853,140,731.89/9,904,890.30
  6. Step 6: Final answer
    x = 13,838,502.90

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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.