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Finding the Fourth Proportional to 61,919.91, 85,450.47 and 35,061.69

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Solution

The fourth proportional to 61,919.91, 85,450.47 and 35,061.69 is: 48,385.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,919.91 : 85,450.47 = 35,061.69 : x
  2. Step 2: Convert to fraction form
    61,919.91/85,450.47 = 35,061.69/x
  3. Step 3: Cross multiply
    61,919.91x = 85,450.47 × 35,061.69
  4. Step 4: Simplify right side
    61,919.91x = 2,996,037,714.19
  5. Step 5: Solve for x
    x = 2,996,037,714.19/61,919.91
  6. Step 6: Final answer
    x = 48,385.69

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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.