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Finding the Fourth Proportional to 58,638, 80,921.92 and 33,486.96

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Solution

The fourth proportional to 58,638, 80,921.92 and 33,486.96 is: 46,212.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,638 : 80,921.92 = 33,486.96 : x
  2. Step 2: Convert to fraction form
    58,638/80,921.92 = 33,486.96/x
  3. Step 3: Cross multiply
    58,638x = 80,921.92 × 33,486.96
  4. Step 4: Simplify right side
    58,638x = 2,709,829,098.16
  5. Step 5: Solve for x
    x = 2,709,829,098.16/58,638
  6. Step 6: Final answer
    x = 46,212.85

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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.