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Finding the Fourth Proportional to 67,644.99, 93,331.47 and 42,155.49

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Solution

The fourth proportional to 67,644.99, 93,331.47 and 42,155.49 is: 58,162.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,644.99 : 93,331.47 = 42,155.49 : x
  2. Step 2: Convert to fraction form
    67,644.99/93,331.47 = 42,155.49/x
  3. Step 3: Cross multiply
    67,644.99x = 93,331.47 × 42,155.49
  4. Step 4: Simplify right side
    67,644.99x = 3,934,433,850.27
  5. Step 5: Solve for x
    x = 3,934,433,850.27/67,644.99
  6. Step 6: Final answer
    x = 58,162.97

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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.