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Finding the Fourth Proportional to 61,845.93, 85,347.42 and 34,987.89

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Solution

The fourth proportional to 61,845.93, 85,347.42 and 34,987.89 is: 48,283.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,845.93 : 85,347.42 = 34,987.89 : x
  2. Step 2: Convert to fraction form
    61,845.93/85,347.42 = 34,987.89/x
  3. Step 3: Cross multiply
    61,845.93x = 85,347.42 × 34,987.89
  4. Step 4: Simplify right side
    61,845.93x = 2,986,126,142.74
  5. Step 5: Solve for x
    x = 2,986,126,142.74/61,845.93
  6. Step 6: Final answer
    x = 48,283.31

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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.