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Finding the Fourth Proportional to 10,663.16, 14,719.18 and 9,165.06

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Solution

The fourth proportional to 10,663.16, 14,719.18 and 9,165.06 is: 12,651.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,663.16 : 14,719.18 = 9,165.06 : x
  2. Step 2: Convert to fraction form
    10,663.16/14,719.18 = 9,165.06/x
  3. Step 3: Cross multiply
    10,663.16x = 14,719.18 × 9,165.06
  4. Step 4: Simplify right side
    10,663.16x = 134,902,167.85
  5. Step 5: Solve for x
    x = 134,902,167.85/10,663.16
  6. Step 6: Final answer
    x = 12,651.24

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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.