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Finding the Fourth Proportional to 60,979.87, 83,965.30 and 53,383.69

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Solution

The fourth proportional to 60,979.87, 83,965.30 and 53,383.69 is: 73,505.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,979.87 : 83,965.30 = 53,383.69 : x
  2. Step 2: Convert to fraction form
    60,979.87/83,965.30 = 53,383.69/x
  3. Step 3: Cross multiply
    60,979.87x = 83,965.30 × 53,383.69
  4. Step 4: Simplify right side
    60,979.87x = 4,482,377,545.96
  5. Step 5: Solve for x
    x = 4,482,377,545.96/60,979.87
  6. Step 6: Final answer
    x = 73,505.86

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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.