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Finding the Fourth Proportional to 38,751.76, 58,129.08 and 12,453.04

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Solution

The fourth proportional to 38,751.76, 58,129.08 and 12,453.04 is: 18,680.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,751.76 : 58,129.08 = 12,453.04 : x
  2. Step 2: Convert to fraction form
    38,751.76/58,129.08 = 12,453.04/x
  3. Step 3: Cross multiply
    38,751.76x = 58,129.08 × 12,453.04
  4. Step 4: Simplify right side
    38,751.76x = 723,883,758.40
  5. Step 5: Solve for x
    x = 723,883,758.40/38,751.76
  6. Step 6: Final answer
    x = 18,680.02

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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.