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Finding the Fourth Proportional to 84,646.81, 116,546.61 and 71,873.11

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Solution

The fourth proportional to 84,646.81, 116,546.61 and 71,873.11 is: 98,959.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,646.81 : 116,546.61 = 71,873.11 : x
  2. Step 2: Convert to fraction form
    84,646.81/116,546.61 = 71,873.11/x
  3. Step 3: Cross multiply
    84,646.81x = 116,546.61 × 71,873.11
  4. Step 4: Simplify right side
    84,646.81x = 8,376,567,320.66
  5. Step 5: Solve for x
    x = 8,376,567,320.66/84,646.81
  6. Step 6: Final answer
    x = 98,959.04

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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.