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Finding the Fourth Proportional to 85,979.72, 118,657.62 and 48,256.52

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Solution

The fourth proportional to 85,979.72, 118,657.62 and 48,256.52 is: 66,597.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,979.72 : 118,657.62 = 48,256.52 : x
  2. Step 2: Convert to fraction form
    85,979.72/118,657.62 = 48,256.52/x
  3. Step 3: Cross multiply
    85,979.72x = 118,657.62 × 48,256.52
  4. Step 4: Simplify right side
    85,979.72x = 5,726,003,812.68
  5. Step 5: Solve for x
    x = 5,726,003,812.68/85,979.72
  6. Step 6: Final answer
    x = 66,597.14

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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.