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Finding the Fourth Proportional to 61,603.76, 85,013.20 and 33,309.44

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Solution

The fourth proportional to 61,603.76, 85,013.20 and 33,309.44 is: 45,967.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,603.76 : 85,013.20 = 33,309.44 : x
  2. Step 2: Convert to fraction form
    61,603.76/85,013.20 = 33,309.44/x
  3. Step 3: Cross multiply
    61,603.76x = 85,013.20 × 33,309.44
  4. Step 4: Simplify right side
    61,603.76x = 2,831,742,084.61
  5. Step 5: Solve for x
    x = 2,831,742,084.61/61,603.76
  6. Step 6: Final answer
    x = 45,967.03

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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.