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Finding the Fourth Proportional to 482,688.70, 724,067.67 and 127,698.50

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Solution

The fourth proportional to 482,688.70, 724,067.67 and 127,698.50 is: 191,556.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,688.70 : 724,067.67 = 127,698.50 : x
  2. Step 2: Convert to fraction form
    482,688.70/724,067.67 = 127,698.50/x
  3. Step 3: Cross multiply
    482,688.70x = 724,067.67 × 127,698.50
  4. Step 4: Simplify right side
    482,688.70x = 92,462,355,357.50
  5. Step 5: Solve for x
    x = 92,462,355,357.50/482,688.70
  6. Step 6: Final answer
    x = 191,556.91

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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.