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Finding the Fourth Proportional to 61,876.92, 85,385.42 and 36,384.32

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Solution

The fourth proportional to 61,876.92, 85,385.42 and 36,384.32 is: 50,207.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,876.92 : 85,385.42 = 36,384.32 : x
  2. Step 2: Convert to fraction form
    61,876.92/85,385.42 = 36,384.32/x
  3. Step 3: Cross multiply
    61,876.92x = 85,385.42 × 36,384.32
  4. Step 4: Simplify right side
    61,876.92x = 3,106,690,444.61
  5. Step 5: Solve for x
    x = 3,106,690,444.61/61,876.92
  6. Step 6: Final answer
    x = 50,207.58

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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.