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Finding the Fourth Proportional to 12,572.18, 17,349.62 and 6,983.18

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Solution

The fourth proportional to 12,572.18, 17,349.62 and 6,983.18 is: 9,636.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,572.18 : 17,349.62 = 6,983.18 : x
  2. Step 2: Convert to fraction form
    12,572.18/17,349.62 = 6,983.18/x
  3. Step 3: Cross multiply
    12,572.18x = 17,349.62 × 6,983.18
  4. Step 4: Simplify right side
    12,572.18x = 121,155,484.48
  5. Step 5: Solve for x
    x = 121,155,484.48/12,572.18
  6. Step 6: Final answer
    x = 9,636.79

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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.