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Finding the Fourth Proportional to 84,300.30, 125,835.48 and 73,659.38

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Solution

The fourth proportional to 84,300.30, 125,835.48 and 73,659.38 is: 109,951.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,300.30 : 125,835.48 = 73,659.38 : x
  2. Step 2: Convert to fraction form
    84,300.30/125,835.48 = 73,659.38/x
  3. Step 3: Cross multiply
    84,300.30x = 125,835.48 × 73,659.38
  4. Step 4: Simplify right side
    84,300.30x = 9,268,962,809.63
  5. Step 5: Solve for x
    x = 9,268,962,809.63/84,300.30
  6. Step 6: Final answer
    x = 109,951.72

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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.