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Finding the Fourth Proportional to 61,712.59, 85,166.48 and 36,220.06

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Solution

The fourth proportional to 61,712.59, 85,166.48 and 36,220.06 is: 49,985.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,712.59 : 85,166.48 = 36,220.06 : x
  2. Step 2: Convert to fraction form
    61,712.59/85,166.48 = 36,220.06/x
  3. Step 3: Cross multiply
    61,712.59x = 85,166.48 × 36,220.06
  4. Step 4: Simplify right side
    61,712.59x = 3,084,734,834.49
  5. Step 5: Solve for x
    x = 3,084,734,834.49/61,712.59
  6. Step 6: Final answer
    x = 49,985.50

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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.