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Finding the Fourth Proportional to 17,312.40, 25,968.60 and 16,947.90

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Solution

The fourth proportional to 17,312.40, 25,968.60 and 16,947.90 is: 25,421.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,312.40 : 25,968.60 = 16,947.90 : x
  2. Step 2: Convert to fraction form
    17,312.40/25,968.60 = 16,947.90/x
  3. Step 3: Cross multiply
    17,312.40x = 25,968.60 × 16,947.90
  4. Step 4: Simplify right side
    17,312.40x = 440,113,235.94
  5. Step 5: Solve for x
    x = 440,113,235.94/17,312.40
  6. Step 6: Final answer
    x = 25,421.85

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Similar ratio
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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.