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Finding the Fourth Proportional to 2,459.76, 3,391.68 and 1,786.20

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Solution

The fourth proportional to 2,459.76, 3,391.68 and 1,786.20 is: 2,462.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,459.76 : 3,391.68 = 1,786.20 : x
  2. Step 2: Convert to fraction form
    2,459.76/3,391.68 = 1,786.20/x
  3. Step 3: Cross multiply
    2,459.76x = 3,391.68 × 1,786.20
  4. Step 4: Simplify right side
    2,459.76x = 6,058,218.82
  5. Step 5: Solve for x
    x = 6,058,218.82/2,459.76
  6. Step 6: Final answer
    x = 2,462.93

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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.