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Finding the Fourth Proportional to 7,656.61, 10,566.12 and 4,472.11

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Solution

The fourth proportional to 7,656.61, 10,566.12 and 4,472.11 is: 6,171.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,656.61 : 10,566.12 = 4,472.11 : x
  2. Step 2: Convert to fraction form
    7,656.61/10,566.12 = 4,472.11/x
  3. Step 3: Cross multiply
    7,656.61x = 10,566.12 × 4,472.11
  4. Step 4: Simplify right side
    7,656.61x = 47,252,850.91
  5. Step 5: Solve for x
    x = 47,252,850.91/7,656.61
  6. Step 6: Final answer
    x = 6,171.51

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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.