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Finding the Fourth Proportional to 61,865.86, 85,444.50 and 41,805.58

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Solution

The fourth proportional to 61,865.86, 85,444.50 and 41,805.58 is: 57,738.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,865.86 : 85,444.50 = 41,805.58 : x
  2. Step 2: Convert to fraction form
    61,865.86/85,444.50 = 41,805.58/x
  3. Step 3: Cross multiply
    61,865.86x = 85,444.50 × 41,805.58
  4. Step 4: Simplify right side
    61,865.86x = 3,572,056,880.31
  5. Step 5: Solve for x
    x = 3,572,056,880.31/61,865.86
  6. Step 6: Final answer
    x = 57,738.74

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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.