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Finding the Fourth Proportional to 61,700.96, 92,560.80 and 20,138.24

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Solution

The fourth proportional to 61,700.96, 92,560.80 and 20,138.24 is: 30,210.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,700.96 : 92,560.80 = 20,138.24 : x
  2. Step 2: Convert to fraction form
    61,700.96/92,560.80 = 20,138.24/x
  3. Step 3: Cross multiply
    61,700.96x = 92,560.80 × 20,138.24
  4. Step 4: Simplify right side
    61,700.96x = 1,864,011,604.99
  5. Step 5: Solve for x
    x = 1,864,011,604.99/61,700.96
  6. Step 6: Final answer
    x = 30,210.41

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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.