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Finding the Fourth Proportional to 84,295.81, 125,828.76 and 73,654.87

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Solution

The fourth proportional to 84,295.81, 125,828.76 and 73,654.87 is: 109,944.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,295.81 : 125,828.76 = 73,654.87 : x
  2. Step 2: Convert to fraction form
    84,295.81/125,828.76 = 73,654.87/x
  3. Step 3: Cross multiply
    84,295.81x = 125,828.76 × 73,654.87
  4. Step 4: Simplify right side
    84,295.81x = 9,267,900,743.32
  5. Step 5: Solve for x
    x = 9,267,900,743.32/84,295.81
  6. Step 6: Final answer
    x = 109,944.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.