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Finding the Fourth Proportional to 128,702.93, 193,080.11 and 44,466.17

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Solution

The fourth proportional to 128,702.93, 193,080.11 and 44,466.17 is: 66,708.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,702.93 : 193,080.11 = 44,466.17 : x
  2. Step 2: Convert to fraction form
    128,702.93/193,080.11 = 44,466.17/x
  3. Step 3: Cross multiply
    128,702.93x = 193,080.11 × 44,466.17
  4. Step 4: Simplify right side
    128,702.93x = 8,585,531,807.15
  5. Step 5: Solve for x
    x = 8,585,531,807.15/128,702.93
  6. Step 6: Final answer
    x = 66,708.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.