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Finding the Fourth Proportional to 117,699.91, 162,429.06 and 63,988.54

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Solution

The fourth proportional to 117,699.91, 162,429.06 and 63,988.54 is: 88,305.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,699.91 : 162,429.06 = 63,988.54 : x
  2. Step 2: Convert to fraction form
    117,699.91/162,429.06 = 63,988.54/x
  3. Step 3: Cross multiply
    117,699.91x = 162,429.06 × 63,988.54
  4. Step 4: Simplify right side
    117,699.91x = 10,393,598,402.97
  5. Step 5: Solve for x
    x = 10,393,598,402.97/117,699.91
  6. Step 6: Final answer
    x = 88,305.92

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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.