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Finding the Fourth Proportional to 283,881.33, 391,756.05 and 156,556.98

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Solution

The fourth proportional to 283,881.33, 391,756.05 and 156,556.98 is: 216,048.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,881.33 : 391,756.05 = 156,556.98 : x
  2. Step 2: Convert to fraction form
    283,881.33/391,756.05 = 156,556.98/x
  3. Step 3: Cross multiply
    283,881.33x = 391,756.05 × 156,556.98
  4. Step 4: Simplify right side
    283,881.33x = 61,332,144,084.73
  5. Step 5: Solve for x
    x = 61,332,144,084.73/283,881.33
  6. Step 6: Final answer
    x = 216,048.53

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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.