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Finding the Fourth Proportional to 8,916,467.56, 12,308,491.68 and 6,019,781.92

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Solution

The fourth proportional to 8,916,467.56, 12,308,491.68 and 6,019,781.92 is: 8,309,841.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,916,467.56 : 12,308,491.68 = 6,019,781.92 : x
  2. Step 2: Convert to fraction form
    8,916,467.56/12,308,491.68 = 6,019,781.92/x
  3. Step 3: Cross multiply
    8,916,467.56x = 12,308,491.68 × 6,019,781.92
  4. Step 4: Simplify right side
    8,916,467.56x = 74,094,435,677,734.42
  5. Step 5: Solve for x
    x = 74,094,435,677,734.42/8,916,467.56
  6. Step 6: Final answer
    x = 8,309,841.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.