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Finding the Fourth Proportional to 3,348.61, 4,621.10 and 1,856.62

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Solution

The fourth proportional to 3,348.61, 4,621.10 and 1,856.62 is: 2,562.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,348.61 : 4,621.10 = 1,856.62 : x
  2. Step 2: Convert to fraction form
    3,348.61/4,621.10 = 1,856.62/x
  3. Step 3: Cross multiply
    3,348.61x = 4,621.10 × 1,856.62
  4. Step 4: Simplify right side
    3,348.61x = 8,579,633.62
  5. Step 5: Solve for x
    x = 8,579,633.62/3,348.61
  6. Step 6: Final answer
    x = 2,562.15

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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.