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Finding the Fourth Proportional to 365,812.40, 548,481.80 and 155,393.20

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Solution

The fourth proportional to 365,812.40, 548,481.80 and 155,393.20 is: 232,989.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,812.40 : 548,481.80 = 155,393.20 : x
  2. Step 2: Convert to fraction form
    365,812.40/548,481.80 = 155,393.20/x
  3. Step 3: Cross multiply
    365,812.40x = 548,481.80 × 155,393.20
  4. Step 4: Simplify right side
    365,812.40x = 85,230,342,043.76
  5. Step 5: Solve for x
    x = 85,230,342,043.76/365,812.40
  6. Step 6: Final answer
    x = 232,989.21

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1.5x scale

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.