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Finding the Fourth Proportional to 61,995.52, 85,569.50 and 38,143.55

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Solution

The fourth proportional to 61,995.52, 85,569.50 and 38,143.55 is: 52,647.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,995.52 : 85,569.50 = 38,143.55 : x
  2. Step 2: Convert to fraction form
    61,995.52/85,569.50 = 38,143.55/x
  3. Step 3: Cross multiply
    61,995.52x = 85,569.50 × 38,143.55
  4. Step 4: Simplify right side
    61,995.52x = 3,263,924,073.88
  5. Step 5: Solve for x
    x = 3,263,924,073.88/61,995.52
  6. Step 6: Final answer
    x = 52,647.75

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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.