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Finding the Fourth Proportional to 67,851.60, 93,536.88 and 47,646.96

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Solution

The fourth proportional to 67,851.60, 93,536.88 and 47,646.96 is: 65,683.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,851.60 : 93,536.88 = 47,646.96 : x
  2. Step 2: Convert to fraction form
    67,851.60/93,536.88 = 47,646.96/x
  3. Step 3: Cross multiply
    67,851.60x = 93,536.88 × 47,646.96
  4. Step 4: Simplify right side
    67,851.60x = 4,456,747,979.88
  5. Step 5: Solve for x
    x = 4,456,747,979.88/67,851.60
  6. Step 6: Final answer
    x = 65,683.76

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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.