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Finding the Fourth Proportional to 61,698.83, 85,143.29 and 34,839.43

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Solution

The fourth proportional to 61,698.83, 85,143.29 and 34,839.43 is: 48,077.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,698.83 : 85,143.29 = 34,839.43 : x
  2. Step 2: Convert to fraction form
    61,698.83/85,143.29 = 34,839.43/x
  3. Step 3: Cross multiply
    61,698.83x = 85,143.29 × 34,839.43
  4. Step 4: Simplify right side
    61,698.83x = 2,966,343,304.87
  5. Step 5: Solve for x
    x = 2,966,343,304.87/61,698.83
  6. Step 6: Final answer
    x = 48,077.79

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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.