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Finding the Fourth Proportional to 67,486.96, 93,240.48 and 57,520.72

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Solution

The fourth proportional to 67,486.96, 93,240.48 and 57,520.72 is: 79,471.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,486.96 : 93,240.48 = 57,520.72 : x
  2. Step 2: Convert to fraction form
    67,486.96/93,240.48 = 57,520.72/x
  3. Step 3: Cross multiply
    67,486.96x = 93,240.48 × 57,520.72
  4. Step 4: Simplify right side
    67,486.96x = 5,363,259,542.75
  5. Step 5: Solve for x
    x = 5,363,259,542.75/67,486.96
  6. Step 6: Final answer
    x = 79,471.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.