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Finding the Fourth Proportional to 323,814.70, 485,722.05 and 235,686.70

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Solution

The fourth proportional to 323,814.70, 485,722.05 and 235,686.70 is: 353,530.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,814.70 : 485,722.05 = 235,686.70 : x
  2. Step 2: Convert to fraction form
    323,814.70/485,722.05 = 235,686.70/x
  3. Step 3: Cross multiply
    323,814.70x = 485,722.05 × 235,686.70
  4. Step 4: Simplify right side
    323,814.70x = 114,478,227,081.74
  5. Step 5: Solve for x
    x = 114,478,227,081.74/323,814.70
  6. Step 6: Final answer
    x = 353,530.05

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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.