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Finding the Fourth Proportional to 365,518.20, 548,277.30 and 155,128.80

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Solution

The fourth proportional to 365,518.20, 548,277.30 and 155,128.80 is: 232,693.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,518.20 : 548,277.30 = 155,128.80 : x
  2. Step 2: Convert to fraction form
    365,518.20/548,277.30 = 155,128.80/x
  3. Step 3: Cross multiply
    365,518.20x = 548,277.30 × 155,128.80
  4. Step 4: Simplify right side
    365,518.20x = 85,053,599,616.24
  5. Step 5: Solve for x
    x = 85,053,599,616.24/365,518.20
  6. Step 6: Final answer
    x = 232,693.20

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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.