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Finding the Fourth Proportional to 57,853.80, 86,780.70 and 48,004.20

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Solution

The fourth proportional to 57,853.80, 86,780.70 and 48,004.20 is: 72,006.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,853.80 : 86,780.70 = 48,004.20 : x
  2. Step 2: Convert to fraction form
    57,853.80/86,780.70 = 48,004.20/x
  3. Step 3: Cross multiply
    57,853.80x = 86,780.70 × 48,004.20
  4. Step 4: Simplify right side
    57,853.80x = 4,165,838,078.94
  5. Step 5: Solve for x
    x = 4,165,838,078.94/57,853.80
  6. Step 6: Final answer
    x = 72,006.30

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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.