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Finding the Fourth Proportional to 15,009.01, 20,712.17 and 8,294.92

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Solution

The fourth proportional to 15,009.01, 20,712.17 and 8,294.92 is: 11,446.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,009.01 : 20,712.17 = 8,294.92 : x
  2. Step 2: Convert to fraction form
    15,009.01/20,712.17 = 8,294.92/x
  3. Step 3: Cross multiply
    15,009.01x = 20,712.17 × 8,294.92
  4. Step 4: Simplify right side
    15,009.01x = 171,805,762.13
  5. Step 5: Solve for x
    x = 171,805,762.13/15,009.01
  6. Step 6: Final answer
    x = 11,446.84

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Half scale
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Double scale
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Similar ratio
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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.