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Finding the Fourth Proportional to 123,508.16, 170,447.88 and 69,795.44

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Solution

The fourth proportional to 123,508.16, 170,447.88 and 69,795.44 is: 96,321.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,508.16 : 170,447.88 = 69,795.44 : x
  2. Step 2: Convert to fraction form
    123,508.16/170,447.88 = 69,795.44/x
  3. Step 3: Cross multiply
    123,508.16x = 170,447.88 × 69,795.44
  4. Step 4: Simplify right side
    123,508.16x = 11,896,484,781.67
  5. Step 5: Solve for x
    x = 11,896,484,781.67/123,508.16
  6. Step 6: Final answer
    x = 96,321.45

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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.