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Finding the Fourth Proportional to 25,403.70, 38,105.55 and 25,230.90

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Solution

The fourth proportional to 25,403.70, 38,105.55 and 25,230.90 is: 37,846.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,403.70 : 38,105.55 = 25,230.90 : x
  2. Step 2: Convert to fraction form
    25,403.70/38,105.55 = 25,230.90/x
  3. Step 3: Cross multiply
    25,403.70x = 38,105.55 × 25,230.90
  4. Step 4: Simplify right side
    25,403.70x = 961,437,321.50
  5. Step 5: Solve for x
    x = 961,437,321.50/25,403.70
  6. Step 6: Final answer
    x = 37,846.35

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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.