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Finding the Fourth Proportional to 72,880.99, 109,353.22 and 25,530.17

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Solution

The fourth proportional to 72,880.99, 109,353.22 and 25,530.17 is: 38,306.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,880.99 : 109,353.22 = 25,530.17 : x
  2. Step 2: Convert to fraction form
    72,880.99/109,353.22 = 25,530.17/x
  3. Step 3: Cross multiply
    72,880.99x = 109,353.22 × 25,530.17
  4. Step 4: Simplify right side
    72,880.99x = 2,791,805,686.06
  5. Step 5: Solve for x
    x = 2,791,805,686.06/72,880.99
  6. Step 6: Final answer
    x = 38,306.36

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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.