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Finding the Fourth Proportional to 61,251.25, 84,533.21 and 38,895.25

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Solution

The fourth proportional to 61,251.25, 84,533.21 and 38,895.25 is: 53,679.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,251.25 : 84,533.21 = 38,895.25 : x
  2. Step 2: Convert to fraction form
    61,251.25/84,533.21 = 38,895.25/x
  3. Step 3: Cross multiply
    61,251.25x = 84,533.21 × 38,895.25
  4. Step 4: Simplify right side
    61,251.25x = 3,287,940,336.25
  5. Step 5: Solve for x
    x = 3,287,940,336.25/61,251.25
  6. Step 6: Final answer
    x = 53,679.56

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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.