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Finding the Fourth Proportional to 268,306.80, 402,460.20 and 264,807.60

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Solution

The fourth proportional to 268,306.80, 402,460.20 and 264,807.60 is: 397,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,306.80 : 402,460.20 = 264,807.60 : x
  2. Step 2: Convert to fraction form
    268,306.80/402,460.20 = 264,807.60/x
  3. Step 3: Cross multiply
    268,306.80x = 402,460.20 × 264,807.60
  4. Step 4: Simplify right side
    268,306.80x = 106,574,519,657.52
  5. Step 5: Solve for x
    x = 106,574,519,657.52/268,306.80
  6. Step 6: Final answer
    x = 397,211.40

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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.