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Finding the Fourth Proportional to 61,987.68, 85,543.20 and 33,693.48

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Solution

The fourth proportional to 61,987.68, 85,543.20 and 33,693.48 is: 46,497.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,987.68 : 85,543.20 = 33,693.48 : x
  2. Step 2: Convert to fraction form
    61,987.68/85,543.20 = 33,693.48/x
  3. Step 3: Cross multiply
    61,987.68x = 85,543.20 × 33,693.48
  4. Step 4: Simplify right side
    61,987.68x = 2,882,248,098.34
  5. Step 5: Solve for x
    x = 2,882,248,098.34/61,987.68
  6. Step 6: Final answer
    x = 46,497.11

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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.