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Finding the Fourth Proportional to 61,898.76, 85,422.35 and 35,040.72

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Solution

The fourth proportional to 61,898.76, 85,422.35 and 35,040.72 is: 48,357.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,898.76 : 85,422.35 = 35,040.72 : x
  2. Step 2: Convert to fraction form
    61,898.76/85,422.35 = 35,040.72/x
  3. Step 3: Cross multiply
    61,898.76x = 85,422.35 × 35,040.72
  4. Step 4: Simplify right side
    61,898.76x = 2,993,260,472.89
  5. Step 5: Solve for x
    x = 2,993,260,472.89/61,898.76
  6. Step 6: Final answer
    x = 48,357.36

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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.