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Finding the Fourth Proportional to 25,553.92, 38,330.88 and 7,085.92

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Solution

The fourth proportional to 25,553.92, 38,330.88 and 7,085.92 is: 10,628.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,553.92 : 38,330.88 = 7,085.92 : x
  2. Step 2: Convert to fraction form
    25,553.92/38,330.88 = 7,085.92/x
  3. Step 3: Cross multiply
    25,553.92x = 38,330.88 × 7,085.92
  4. Step 4: Simplify right side
    25,553.92x = 271,609,549.21
  5. Step 5: Solve for x
    x = 271,609,549.21/25,553.92
  6. Step 6: Final answer
    x = 10,628.88

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.