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Finding the Fourth Proportional to 117,585.74, 162,269.51 and 63,871.80

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Solution

The fourth proportional to 117,585.74, 162,269.51 and 63,871.80 is: 88,143.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,585.74 : 162,269.51 = 63,871.80 : x
  2. Step 2: Convert to fraction form
    117,585.74/162,269.51 = 63,871.80/x
  3. Step 3: Cross multiply
    117,585.74x = 162,269.51 × 63,871.80
  4. Step 4: Simplify right side
    117,585.74x = 10,364,445,848.50
  5. Step 5: Solve for x
    x = 10,364,445,848.50/117,585.74
  6. Step 6: Final answer
    x = 88,143.73

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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.