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Finding the Fourth Proportional to 71,644.76, 98,878.86 and 43,350.68

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Solution

The fourth proportional to 71,644.76, 98,878.86 and 43,350.68 is: 59,829.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,644.76 : 98,878.86 = 43,350.68 : x
  2. Step 2: Convert to fraction form
    71,644.76/98,878.86 = 43,350.68/x
  3. Step 3: Cross multiply
    71,644.76x = 98,878.86 × 43,350.68
  4. Step 4: Simplify right side
    71,644.76x = 4,286,465,818.62
  5. Step 5: Solve for x
    x = 4,286,465,818.62/71,644.76
  6. Step 6: Final answer
    x = 59,829.44

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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.