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Finding the Fourth Proportional to 47,280.52, 70,921.04 and 12,217.76

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Solution

The fourth proportional to 47,280.52, 70,921.04 and 12,217.76 is: 18,326.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,280.52 : 70,921.04 = 12,217.76 : x
  2. Step 2: Convert to fraction form
    47,280.52/70,921.04 = 12,217.76/x
  3. Step 3: Cross multiply
    47,280.52x = 70,921.04 × 12,217.76
  4. Step 4: Simplify right side
    47,280.52x = 866,496,245.67
  5. Step 5: Solve for x
    x = 866,496,245.67/47,280.52
  6. Step 6: Final answer
    x = 18,326.71

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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.