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Finding the Fourth Proportional to 61,168.74, 84,378.66 and 38,499.30

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Solution

The fourth proportional to 61,168.74, 84,378.66 and 38,499.30 is: 53,107.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,168.74 : 84,378.66 = 38,499.30 : x
  2. Step 2: Convert to fraction form
    61,168.74/84,378.66 = 38,499.30/x
  3. Step 3: Cross multiply
    61,168.74x = 84,378.66 × 38,499.30
  4. Step 4: Simplify right side
    61,168.74x = 3,248,519,344.94
  5. Step 5: Solve for x
    x = 3,248,519,344.94/61,168.74
  6. Step 6: Final answer
    x = 53,107.51

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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.