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Finding the Fourth Proportional to 72,696.66, 109,059.62 and 25,948.32

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Solution

The fourth proportional to 72,696.66, 109,059.62 and 25,948.32 is: 38,927.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,696.66 : 109,059.62 = 25,948.32 : x
  2. Step 2: Convert to fraction form
    72,696.66/109,059.62 = 25,948.32/x
  3. Step 3: Cross multiply
    72,696.66x = 109,059.62 × 25,948.32
  4. Step 4: Simplify right side
    72,696.66x = 2,829,913,789.10
  5. Step 5: Solve for x
    x = 2,829,913,789.10/72,696.66
  6. Step 6: Final answer
    x = 38,927.70

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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.