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Finding the Fourth Proportional to 4,221.68, 5,826.20 and 2,358.68

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Solution

The fourth proportional to 4,221.68, 5,826.20 and 2,358.68 is: 3,255.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,221.68 : 5,826.20 = 2,358.68 : x
  2. Step 2: Convert to fraction form
    4,221.68/5,826.20 = 2,358.68/x
  3. Step 3: Cross multiply
    4,221.68x = 5,826.20 × 2,358.68
  4. Step 4: Simplify right side
    4,221.68x = 13,742,141.42
  5. Step 5: Solve for x
    x = 13,742,141.42/4,221.68
  6. Step 6: Final answer
    x = 3,255.14

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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.