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Finding the Fourth Proportional to 61,906.80, 92,854.80 and 20,353.80

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Solution

The fourth proportional to 61,906.80, 92,854.80 and 20,353.80 is: 30,528.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,906.80 : 92,854.80 = 20,353.80 : x
  2. Step 2: Convert to fraction form
    61,906.80/92,854.80 = 20,353.80/x
  3. Step 3: Cross multiply
    61,906.80x = 92,854.80 × 20,353.80
  4. Step 4: Simplify right side
    61,906.80x = 1,889,948,028.24
  5. Step 5: Solve for x
    x = 1,889,948,028.24/61,906.80
  6. Step 6: Final answer
    x = 30,528.92

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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.