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Finding the Fourth Proportional to 312,699.66, 469,077.17 and 88,062.09

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Solution

The fourth proportional to 312,699.66, 469,077.17 and 88,062.09 is: 132,100.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,699.66 : 469,077.17 = 88,062.09 : x
  2. Step 2: Convert to fraction form
    312,699.66/469,077.17 = 88,062.09/x
  3. Step 3: Cross multiply
    312,699.66x = 469,077.17 × 88,062.09
  4. Step 4: Simplify right side
    312,699.66x = 41,307,915,521.17
  5. Step 5: Solve for x
    x = 41,307,915,521.17/312,699.66
  6. Step 6: Final answer
    x = 132,100.93

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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.