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Finding the Fourth Proportional to 7,892.68, 10,891.85 and 4,355.89

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Solution

The fourth proportional to 7,892.68, 10,891.85 and 4,355.89 is: 6,011.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,892.68 : 10,891.85 = 4,355.89 : x
  2. Step 2: Convert to fraction form
    7,892.68/10,891.85 = 4,355.89/x
  3. Step 3: Cross multiply
    7,892.68x = 10,891.85 × 4,355.89
  4. Step 4: Simplify right side
    7,892.68x = 47,443,689.61
  5. Step 5: Solve for x
    x = 47,443,689.61/7,892.68
  6. Step 6: Final answer
    x = 6,011.10

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1.5x scale

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.