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Finding the Fourth Proportional to 84,986.83, 117,291.47 and 48,691.74

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Solution

The fourth proportional to 84,986.83, 117,291.47 and 48,691.74 is: 67,200.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,986.83 : 117,291.47 = 48,691.74 : x
  2. Step 2: Convert to fraction form
    84,986.83/117,291.47 = 48,691.74/x
  3. Step 3: Cross multiply
    84,986.83x = 117,291.47 × 48,691.74
  4. Step 4: Simplify right side
    84,986.83x = 5,711,125,518.00
  5. Step 5: Solve for x
    x = 5,711,125,518.00/84,986.83
  6. Step 6: Final answer
    x = 67,200.13

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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.