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Finding the Fourth Proportional to 39,753.49, 54,802 and 27,779.66

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Solution

The fourth proportional to 39,753.49, 54,802 and 27,779.66 is: 38,295.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,753.49 : 54,802 = 27,779.66 : x
  2. Step 2: Convert to fraction form
    39,753.49/54,802 = 27,779.66/x
  3. Step 3: Cross multiply
    39,753.49x = 54,802 × 27,779.66
  4. Step 4: Simplify right side
    39,753.49x = 1,522,380,927.32
  5. Step 5: Solve for x
    x = 1,522,380,927.32/39,753.49
  6. Step 6: Final answer
    x = 38,295.53

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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.