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Finding the Fourth Proportional to 2,347.48, 3,240.15 and 1,352.92

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Solution

The fourth proportional to 2,347.48, 3,240.15 and 1,352.92 is: 1,867.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,347.48 : 3,240.15 = 1,352.92 : x
  2. Step 2: Convert to fraction form
    2,347.48/3,240.15 = 1,352.92/x
  3. Step 3: Cross multiply
    2,347.48x = 3,240.15 × 1,352.92
  4. Step 4: Simplify right side
    2,347.48x = 4,383,655.64
  5. Step 5: Solve for x
    x = 4,383,655.64/2,347.48
  6. Step 6: Final answer
    x = 1,867.39

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Half scale
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Double scale
Find fourth proportional to 2,348.48, 3,241.53 and 1,353.92
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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.