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Finding the Fourth Proportional to 11,366.76, 15,686.12 and 6,651.96

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Solution

The fourth proportional to 11,366.76, 15,686.12 and 6,651.96 is: 9,179.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,366.76 : 15,686.12 = 6,651.96 : x
  2. Step 2: Convert to fraction form
    11,366.76/15,686.12 = 6,651.96/x
  3. Step 3: Cross multiply
    11,366.76x = 15,686.12 × 6,651.96
  4. Step 4: Simplify right side
    11,366.76x = 104,343,442.80
  5. Step 5: Solve for x
    x = 104,343,442.80/11,366.76
  6. Step 6: Final answer
    x = 9,179.70

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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.