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Finding the Fourth Proportional to 61,971.86, 85,521.71 and 33,677.55

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Solution

The fourth proportional to 61,971.86, 85,521.71 and 33,677.55 is: 46,475.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,971.86 : 85,521.71 = 33,677.55 : x
  2. Step 2: Convert to fraction form
    61,971.86/85,521.71 = 33,677.55/x
  3. Step 3: Cross multiply
    61,971.86x = 85,521.71 × 33,677.55
  4. Step 4: Simplify right side
    61,971.86x = 2,880,161,748.80
  5. Step 5: Solve for x
    x = 2,880,161,748.80/61,971.86
  6. Step 6: Final answer
    x = 46,475.31

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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.