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Finding the Fourth Proportional to 61,650.78, 85,078.07 and 33,356.46

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Solution

The fourth proportional to 61,650.78, 85,078.07 and 33,356.46 is: 46,031.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,650.78 : 85,078.07 = 33,356.46 : x
  2. Step 2: Convert to fraction form
    61,650.78/85,078.07 = 33,356.46/x
  3. Step 3: Cross multiply
    61,650.78x = 85,078.07 × 33,356.46
  4. Step 4: Simplify right side
    61,650.78x = 2,837,903,516.18
  5. Step 5: Solve for x
    x = 2,837,903,516.18/61,650.78
  6. Step 6: Final answer
    x = 46,031.92

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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.