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Finding the Fourth Proportional to 114,543.66, 158,070.20 and 66,787.79

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Solution

The fourth proportional to 114,543.66, 158,070.20 and 66,787.79 is: 92,167.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,543.66 : 158,070.20 = 66,787.79 : x
  2. Step 2: Convert to fraction form
    114,543.66/158,070.20 = 66,787.79/x
  3. Step 3: Cross multiply
    114,543.66x = 158,070.20 × 66,787.79
  4. Step 4: Simplify right side
    114,543.66x = 10,557,158,699.48
  5. Step 5: Solve for x
    x = 10,557,158,699.48/114,543.66
  6. Step 6: Final answer
    x = 92,167.12

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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.