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Finding the Fourth Proportional to 72,696.60, 109,052.10 and 25,304.40

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Solution

The fourth proportional to 72,696.60, 109,052.10 and 25,304.40 is: 37,959.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,696.60 : 109,052.10 = 25,304.40 : x
  2. Step 2: Convert to fraction form
    72,696.60/109,052.10 = 25,304.40/x
  3. Step 3: Cross multiply
    72,696.60x = 109,052.10 × 25,304.40
  4. Step 4: Simplify right side
    72,696.60x = 2,759,497,959.24
  5. Step 5: Solve for x
    x = 2,759,497,959.24/72,696.60
  6. Step 6: Final answer
    x = 37,959.11

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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.