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Finding the Fourth Proportional to 61,150.92, 91,726.50 and 16,778.28

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Solution

The fourth proportional to 61,150.92, 91,726.50 and 16,778.28 is: 25,167.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,150.92 : 91,726.50 = 16,778.28 : x
  2. Step 2: Convert to fraction form
    61,150.92/91,726.50 = 16,778.28/x
  3. Step 3: Cross multiply
    61,150.92x = 91,726.50 × 16,778.28
  4. Step 4: Simplify right side
    61,150.92x = 1,539,012,900.42
  5. Step 5: Solve for x
    x = 1,539,012,900.42/61,150.92
  6. Step 6: Final answer
    x = 25,167.45

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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.