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Finding the Fourth Proportional to 15,043.32, 20,759.20 and 8,237.04

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Solution

The fourth proportional to 15,043.32, 20,759.20 and 8,237.04 is: 11,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,043.32 : 20,759.20 = 8,237.04 : x
  2. Step 2: Convert to fraction form
    15,043.32/20,759.20 = 8,237.04/x
  3. Step 3: Cross multiply
    15,043.32x = 20,759.20 × 8,237.04
  4. Step 4: Simplify right side
    15,043.32x = 170,994,360.77
  5. Step 5: Solve for x
    x = 170,994,360.77/15,043.32
  6. Step 6: Final answer
    x = 11,366.80

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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.