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Finding the Fourth Proportional to 6,792.72, 9,374.13 and 4,139.52

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Solution

The fourth proportional to 6,792.72, 9,374.13 and 4,139.52 is: 5,712.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,792.72 : 9,374.13 = 4,139.52 : x
  2. Step 2: Convert to fraction form
    6,792.72/9,374.13 = 4,139.52/x
  3. Step 3: Cross multiply
    6,792.72x = 9,374.13 × 4,139.52
  4. Step 4: Simplify right side
    6,792.72x = 38,804,398.62
  5. Step 5: Solve for x
    x = 38,804,398.62/6,792.72
  6. Step 6: Final answer
    x = 5,712.65

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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.