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Finding the Fourth Proportional to 61,978.52, 92,843.03 and 28,652.69

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Solution

The fourth proportional to 61,978.52, 92,843.03 and 28,652.69 is: 42,921.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,978.52 : 92,843.03 = 28,652.69 : x
  2. Step 2: Convert to fraction form
    61,978.52/92,843.03 = 28,652.69/x
  3. Step 3: Cross multiply
    61,978.52x = 92,843.03 × 28,652.69
  4. Step 4: Simplify right side
    61,978.52x = 2,660,201,949.77
  5. Step 5: Solve for x
    x = 2,660,201,949.77/61,978.52
  6. Step 6: Final answer
    x = 42,921.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.