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Finding the Fourth Proportional to 23,472.70, 32,391.80 and 12,862.10

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Solution

The fourth proportional to 23,472.70, 32,391.80 and 12,862.10 is: 17,749.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,472.70 : 32,391.80 = 12,862.10 : x
  2. Step 2: Convert to fraction form
    23,472.70/32,391.80 = 12,862.10/x
  3. Step 3: Cross multiply
    23,472.70x = 32,391.80 × 12,862.10
  4. Step 4: Simplify right side
    23,472.70x = 416,626,570.78
  5. Step 5: Solve for x
    x = 416,626,570.78/23,472.70
  6. Step 6: Final answer
    x = 17,749.41

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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.