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Finding the Fourth Proportional to 74,832.76, 103,282.05 and 71,469.64

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Solution

The fourth proportional to 74,832.76, 103,282.05 and 71,469.64 is: 98,640.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,832.76 : 103,282.05 = 71,469.64 : x
  2. Step 2: Convert to fraction form
    74,832.76/103,282.05 = 71,469.64/x
  3. Step 3: Cross multiply
    74,832.76x = 103,282.05 × 71,469.64
  4. Step 4: Simplify right side
    74,832.76x = 7,381,530,931.96
  5. Step 5: Solve for x
    x = 7,381,530,931.96/74,832.76
  6. Step 6: Final answer
    x = 98,640.37

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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.