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Finding the Fourth Proportional to 52,825.59, 79,238.39 and 13,385.79

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Solution

The fourth proportional to 52,825.59, 79,238.39 and 13,385.79 is: 20,078.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,825.59 : 79,238.39 = 13,385.79 : x
  2. Step 2: Convert to fraction form
    52,825.59/79,238.39 = 13,385.79/x
  3. Step 3: Cross multiply
    52,825.59x = 79,238.39 × 13,385.79
  4. Step 4: Simplify right side
    52,825.59x = 1,060,668,381.55
  5. Step 5: Solve for x
    x = 1,060,668,381.55/52,825.59
  6. Step 6: Final answer
    x = 20,078.69

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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.