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Finding the Fourth Proportional to 223,403.90, 335,105.85 and 156,919.10

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Solution

The fourth proportional to 223,403.90, 335,105.85 and 156,919.10 is: 235,378.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,403.90 : 335,105.85 = 156,919.10 : x
  2. Step 2: Convert to fraction form
    223,403.90/335,105.85 = 156,919.10/x
  3. Step 3: Cross multiply
    223,403.90x = 335,105.85 × 156,919.10
  4. Step 4: Simplify right side
    223,403.90x = 52,584,508,386.74
  5. Step 5: Solve for x
    x = 52,584,508,386.74/223,403.90
  6. Step 6: Final answer
    x = 235,378.65

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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.