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Finding the Fourth Proportional to 12,572.38, 17,349.90 and 6,983.38

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Solution

The fourth proportional to 12,572.38, 17,349.90 and 6,983.38 is: 9,637.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,572.38 : 17,349.90 = 6,983.38 : x
  2. Step 2: Convert to fraction form
    12,572.38/17,349.90 = 6,983.38/x
  3. Step 3: Cross multiply
    12,572.38x = 17,349.90 × 6,983.38
  4. Step 4: Simplify right side
    12,572.38x = 121,160,857.91
  5. Step 5: Solve for x
    x = 121,160,857.91/12,572.38
  6. Step 6: Final answer
    x = 9,637.07

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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.