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Finding the Fourth Proportional to 42,381.40, 63,600.90 and 23,661.40

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Solution

The fourth proportional to 42,381.40, 63,600.90 and 23,661.40 is: 35,508.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,381.40 : 63,600.90 = 23,661.40 : x
  2. Step 2: Convert to fraction form
    42,381.40/63,600.90 = 23,661.40/x
  3. Step 3: Cross multiply
    42,381.40x = 63,600.90 × 23,661.40
  4. Step 4: Simplify right side
    42,381.40x = 1,504,886,335.26
  5. Step 5: Solve for x
    x = 1,504,886,335.26/42,381.40
  6. Step 6: Final answer
    x = 35,508.18

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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.