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Finding the Fourth Proportional to 73,152.76, 109,729.14 and 20,562.25

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Solution

The fourth proportional to 73,152.76, 109,729.14 and 20,562.25 is: 30,843.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,152.76 : 109,729.14 = 20,562.25 : x
  2. Step 2: Convert to fraction form
    73,152.76/109,729.14 = 20,562.25/x
  3. Step 3: Cross multiply
    73,152.76x = 109,729.14 × 20,562.25
  4. Step 4: Simplify right side
    73,152.76x = 2,256,277,486.02
  5. Step 5: Solve for x
    x = 2,256,277,486.02/73,152.76
  6. Step 6: Final answer
    x = 30,843.37

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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.