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Finding the Fourth Proportional to 117,447.65, 162,076.93 and 63,731.30

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Solution

The fourth proportional to 117,447.65, 162,076.93 and 63,731.30 is: 87,948.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,447.65 : 162,076.93 = 63,731.30 : x
  2. Step 2: Convert to fraction form
    117,447.65/162,076.93 = 63,731.30/x
  3. Step 3: Cross multiply
    117,447.65x = 162,076.93 × 63,731.30
  4. Step 4: Simplify right side
    117,447.65x = 10,329,373,448.91
  5. Step 5: Solve for x
    x = 10,329,373,448.91/117,447.65
  6. Step 6: Final answer
    x = 87,948.75

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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.