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Finding the Fourth Proportional to 17,152.80, 25,729.20 and 14,042.40

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Solution

The fourth proportional to 17,152.80, 25,729.20 and 14,042.40 is: 21,063.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,152.80 : 25,729.20 = 14,042.40 : x
  2. Step 2: Convert to fraction form
    17,152.80/25,729.20 = 14,042.40/x
  3. Step 3: Cross multiply
    17,152.80x = 25,729.20 × 14,042.40
  4. Step 4: Simplify right side
    17,152.80x = 361,299,718.08
  5. Step 5: Solve for x
    x = 361,299,718.08/17,152.80
  6. Step 6: Final answer
    x = 21,063.60

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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.