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Finding the Fourth Proportional to 115,521.90, 173,359.65 and 65,601.90

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Solution

The fourth proportional to 115,521.90, 173,359.65 and 65,601.90 is: 98,446.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,521.90 : 173,359.65 = 65,601.90 : x
  2. Step 2: Convert to fraction form
    115,521.90/173,359.65 = 65,601.90/x
  3. Step 3: Cross multiply
    115,521.90x = 173,359.65 × 65,601.90
  4. Step 4: Simplify right side
    115,521.90x = 11,372,722,423.34
  5. Step 5: Solve for x
    x = 11,372,722,423.34/115,521.90
  6. Step 6: Final answer
    x = 98,446.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.