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Finding the Fourth Proportional to 2,416.16, 3,624.80 and 856.08

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Solution

The fourth proportional to 2,416.16, 3,624.80 and 856.08 is: 1,284.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,416.16 : 3,624.80 = 856.08 : x
  2. Step 2: Convert to fraction form
    2,416.16/3,624.80 = 856.08/x
  3. Step 3: Cross multiply
    2,416.16x = 3,624.80 × 856.08
  4. Step 4: Simplify right side
    2,416.16x = 3,103,118.78
  5. Step 5: Solve for x
    x = 3,103,118.78/2,416.16
  6. Step 6: Final answer
    x = 1,284.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.