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Finding the Fourth Proportional to 43,207.90, 59,638.21 and 28,141.90

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Solution

The fourth proportional to 43,207.90, 59,638.21 and 28,141.90 is: 38,843.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,207.90 : 59,638.21 = 28,141.90 : x
  2. Step 2: Convert to fraction form
    43,207.90/59,638.21 = 28,141.90/x
  3. Step 3: Cross multiply
    43,207.90x = 59,638.21 × 28,141.90
  4. Step 4: Simplify right side
    43,207.90x = 1,678,332,322.55
  5. Step 5: Solve for x
    x = 1,678,332,322.55/43,207.90
  6. Step 6: Final answer
    x = 38,843.18

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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.