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Finding the Fourth Proportional to 61,869.74, 85,379.40 and 35,017.56

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Solution

The fourth proportional to 61,869.74, 85,379.40 and 35,017.56 is: 48,323.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,869.74 : 85,379.40 = 35,017.56 : x
  2. Step 2: Convert to fraction form
    61,869.74/85,379.40 = 35,017.56/x
  3. Step 3: Cross multiply
    61,869.74x = 85,379.40 × 35,017.56
  4. Step 4: Simplify right side
    61,869.74x = 2,989,778,262.26
  5. Step 5: Solve for x
    x = 2,989,778,262.26/61,869.74
  6. Step 6: Final answer
    x = 48,323.76

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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.