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Finding the Fourth Proportional to 61,866.88, 85,371.64 and 36,374.32

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Solution

The fourth proportional to 61,866.88, 85,371.64 and 36,374.32 is: 50,193.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,866.88 : 85,371.64 = 36,374.32 : x
  2. Step 2: Convert to fraction form
    61,866.88/85,371.64 = 36,374.32/x
  3. Step 3: Cross multiply
    61,866.88x = 85,371.64 × 36,374.32
  4. Step 4: Simplify right side
    61,866.88x = 3,105,335,352.28
  5. Step 5: Solve for x
    x = 3,105,335,352.28/61,866.88
  6. Step 6: Final answer
    x = 50,193.83

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1.5x scale

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.