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Finding the Fourth Proportional to 72,697.92, 109,061.50 and 25,949.58

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Solution

The fourth proportional to 72,697.92, 109,061.50 and 25,949.58 is: 38,929.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,697.92 : 109,061.50 = 25,949.58 : x
  2. Step 2: Convert to fraction form
    72,697.92/109,061.50 = 25,949.58/x
  3. Step 3: Cross multiply
    72,697.92x = 109,061.50 × 25,949.58
  4. Step 4: Simplify right side
    72,697.92x = 2,830,100,119.17
  5. Step 5: Solve for x
    x = 2,830,100,119.17/72,697.92
  6. Step 6: Final answer
    x = 38,929.59

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1.5x scale

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.