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Finding the Fourth Proportional to 23,471.70, 32,390.42 and 12,861.10

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Solution

The fourth proportional to 23,471.70, 32,390.42 and 12,861.10 is: 17,748.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,471.70 : 32,390.42 = 12,861.10 : x
  2. Step 2: Convert to fraction form
    23,471.70/32,390.42 = 12,861.10/x
  3. Step 3: Cross multiply
    23,471.70x = 32,390.42 × 12,861.10
  4. Step 4: Simplify right side
    23,471.70x = 416,576,430.66
  5. Step 5: Solve for x
    x = 416,576,430.66/23,471.70
  6. Step 6: Final answer
    x = 17,748.03

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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.