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Finding the Fourth Proportional to 67,798.32, 93,542.34 and 39,115.71

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Solution

The fourth proportional to 67,798.32, 93,542.34 and 39,115.71 is: 53,968.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,798.32 : 93,542.34 = 39,115.71 : x
  2. Step 2: Convert to fraction form
    67,798.32/93,542.34 = 39,115.71/x
  3. Step 3: Cross multiply
    67,798.32x = 93,542.34 × 39,115.71
  4. Step 4: Simplify right side
    67,798.32x = 3,658,975,190.85
  5. Step 5: Solve for x
    x = 3,658,975,190.85/67,798.32
  6. Step 6: Final answer
    x = 53,968.53

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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.