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Finding the Fourth Proportional to 14,047.65, 19,385.75 and 8,079.18

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Solution

The fourth proportional to 14,047.65, 19,385.75 and 8,079.18 is: 11,149.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,047.65 : 19,385.75 = 8,079.18 : x
  2. Step 2: Convert to fraction form
    14,047.65/19,385.75 = 8,079.18/x
  3. Step 3: Cross multiply
    14,047.65x = 19,385.75 × 8,079.18
  4. Step 4: Simplify right side
    14,047.65x = 156,620,923.29
  5. Step 5: Solve for x
    x = 156,620,923.29/14,047.65
  6. Step 6: Final answer
    x = 11,149.26

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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.