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Finding the Fourth Proportional to 38,624.40, 54,190.80 and 38,624.40

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Solution

The fourth proportional to 38,624.40, 54,190.80 and 38,624.40 is: 54,190.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,624.40 : 54,190.80 = 38,624.40 : x
  2. Step 2: Convert to fraction form
    38,624.40/54,190.80 = 38,624.40/x
  3. Step 3: Cross multiply
    38,624.40x = 54,190.80 × 38,624.40
  4. Step 4: Simplify right side
    38,624.40x = 2,093,087,135.52
  5. Step 5: Solve for x
    x = 2,093,087,135.52/38,624.40
  6. Step 6: Final answer
    x = 54,190.80

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