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Finding the Fourth Proportional to 13,714.88, 20,559.99 and 4,947.74

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Solution

The fourth proportional to 13,714.88, 20,559.99 and 4,947.74 is: 7,417.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,714.88 : 20,559.99 = 4,947.74 : x
  2. Step 2: Convert to fraction form
    13,714.88/20,559.99 = 4,947.74/x
  3. Step 3: Cross multiply
    13,714.88x = 20,559.99 × 4,947.74
  4. Step 4: Simplify right side
    13,714.88x = 101,725,382.12
  5. Step 5: Solve for x
    x = 101,725,382.12/13,714.88
  6. Step 6: Final answer
    x = 7,417.16

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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.