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Finding the Fourth Proportional to 57,665.94, 79,520.74 and 38,545.75

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Solution

The fourth proportional to 57,665.94, 79,520.74 and 38,545.75 is: 53,154.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,665.94 : 79,520.74 = 38,545.75 : x
  2. Step 2: Convert to fraction form
    57,665.94/79,520.74 = 38,545.75/x
  3. Step 3: Cross multiply
    57,665.94x = 79,520.74 × 38,545.75
  4. Step 4: Simplify right side
    57,665.94x = 3,065,186,563.86
  5. Step 5: Solve for x
    x = 3,065,186,563.86/57,665.94
  6. Step 6: Final answer
    x = 53,154.19

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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.