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Finding the Fourth Proportional to 61,645.76, 85,072.50 and 34,050.35

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Solution

The fourth proportional to 61,645.76, 85,072.50 and 34,050.35 is: 46,990.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,645.76 : 85,072.50 = 34,050.35 : x
  2. Step 2: Convert to fraction form
    61,645.76/85,072.50 = 34,050.35/x
  3. Step 3: Cross multiply
    61,645.76x = 85,072.50 × 34,050.35
  4. Step 4: Simplify right side
    61,645.76x = 2,896,748,469.56
  5. Step 5: Solve for x
    x = 2,896,748,469.56/61,645.76
  6. Step 6: Final answer
    x = 46,990.23

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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.