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Finding the Fourth Proportional to 62,138.90, 85,749.08 and 35,282.90

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Solution

The fourth proportional to 62,138.90, 85,749.08 and 35,282.90 is: 48,688.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,138.90 : 85,749.08 = 35,282.90 : x
  2. Step 2: Convert to fraction form
    62,138.90/85,749.08 = 35,282.90/x
  3. Step 3: Cross multiply
    62,138.90x = 85,749.08 × 35,282.90
  4. Step 4: Simplify right side
    62,138.90x = 3,025,475,609.57
  5. Step 5: Solve for x
    x = 3,025,475,609.57/62,138.90
  6. Step 6: Final answer
    x = 48,688.92

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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.