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Finding the Fourth Proportional to 183,564.80, 275,347.20 and 142,092.80

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Solution

The fourth proportional to 183,564.80, 275,347.20 and 142,092.80 is: 213,139.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,564.80 : 275,347.20 = 142,092.80 : x
  2. Step 2: Convert to fraction form
    183,564.80/275,347.20 = 142,092.80/x
  3. Step 3: Cross multiply
    183,564.80x = 275,347.20 × 142,092.80
  4. Step 4: Simplify right side
    183,564.80x = 39,124,854,620.16
  5. Step 5: Solve for x
    x = 39,124,854,620.16/183,564.80
  6. Step 6: Final answer
    x = 213,139.20

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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.