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Finding the Fourth Proportional to 354,501.70, 531,801.15 and 117,819.70

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Solution

The fourth proportional to 354,501.70, 531,801.15 and 117,819.70 is: 176,745.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,501.70 : 531,801.15 = 117,819.70 : x
  2. Step 2: Convert to fraction form
    354,501.70/531,801.15 = 117,819.70/x
  3. Step 3: Cross multiply
    354,501.70x = 531,801.15 × 117,819.70
  4. Step 4: Simplify right side
    354,501.70x = 62,656,651,952.66
  5. Step 5: Solve for x
    x = 62,656,651,952.66/354,501.70
  6. Step 6: Final answer
    x = 176,745.70

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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.