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Finding the Fourth Proportional to 122,572.80, 183,859.20 and 39,466.80

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Solution

The fourth proportional to 122,572.80, 183,859.20 and 39,466.80 is: 59,200.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,572.80 : 183,859.20 = 39,466.80 : x
  2. Step 2: Convert to fraction form
    122,572.80/183,859.20 = 39,466.80/x
  3. Step 3: Cross multiply
    122,572.80x = 183,859.20 × 39,466.80
  4. Step 4: Simplify right side
    122,572.80x = 7,256,334,274.56
  5. Step 5: Solve for x
    x = 7,256,334,274.56/122,572.80
  6. Step 6: Final answer
    x = 59,200.20

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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.