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Finding the Fourth Proportional to 15,062.95, 20,786.65 and 8,348.59

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Solution

The fourth proportional to 15,062.95, 20,786.65 and 8,348.59 is: 11,520.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,062.95 : 20,786.65 = 8,348.59 : x
  2. Step 2: Convert to fraction form
    15,062.95/20,786.65 = 8,348.59/x
  3. Step 3: Cross multiply
    15,062.95x = 20,786.65 × 8,348.59
  4. Step 4: Simplify right side
    15,062.95x = 173,539,218.32
  5. Step 5: Solve for x
    x = 173,539,218.32/15,062.95
  6. Step 6: Final answer
    x = 11,520.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.