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Finding the Fourth Proportional to 12,324.16, 17,008.92 and 7,020.88

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Solution

The fourth proportional to 12,324.16, 17,008.92 and 7,020.88 is: 9,689.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,324.16 : 17,008.92 = 7,020.88 : x
  2. Step 2: Convert to fraction form
    12,324.16/17,008.92 = 7,020.88/x
  3. Step 3: Cross multiply
    12,324.16x = 17,008.92 × 7,020.88
  4. Step 4: Simplify right side
    12,324.16x = 119,417,586.25
  5. Step 5: Solve for x
    x = 119,417,586.25/12,324.16
  6. Step 6: Final answer
    x = 9,689.71

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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.