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Finding the Fourth Proportional to 365,812.20, 548,718.30 and 155,422.80

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Solution

The fourth proportional to 365,812.20, 548,718.30 and 155,422.80 is: 233,134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,812.20 : 548,718.30 = 155,422.80 : x
  2. Step 2: Convert to fraction form
    365,812.20/548,718.30 = 155,422.80/x
  3. Step 3: Cross multiply
    365,812.20x = 548,718.30 × 155,422.80
  4. Step 4: Simplify right side
    365,812.20x = 85,283,334,597.24
  5. Step 5: Solve for x
    x = 85,283,334,597.24/365,812.20
  6. Step 6: Final answer
    x = 233,134.20

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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.