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Finding the Fourth Proportional to 115,586.88, 173,404.56 and 65,690.08

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Solution

The fourth proportional to 115,586.88, 173,404.56 and 65,690.08 is: 98,548.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,586.88 : 173,404.56 = 65,690.08 : x
  2. Step 2: Convert to fraction form
    115,586.88/173,404.56 = 65,690.08/x
  3. Step 3: Cross multiply
    115,586.88x = 173,404.56 × 65,690.08
  4. Step 4: Simplify right side
    115,586.88x = 11,390,959,418.76
  5. Step 5: Solve for x
    x = 11,390,959,418.76/115,586.88
  6. Step 6: Final answer
    x = 98,548.90

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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.