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Finding the Fourth Proportional to 61,685.85, 85,120.17 and 35,840.37

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Solution

The fourth proportional to 61,685.85, 85,120.17 and 35,840.37 is: 49,456.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,685.85 : 85,120.17 = 35,840.37 : x
  2. Step 2: Convert to fraction form
    61,685.85/85,120.17 = 35,840.37/x
  3. Step 3: Cross multiply
    61,685.85x = 85,120.17 × 35,840.37
  4. Step 4: Simplify right side
    61,685.85x = 3,050,738,572.06
  5. Step 5: Solve for x
    x = 3,050,738,572.06/61,685.85
  6. Step 6: Final answer
    x = 49,456.05

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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.