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Finding the Fourth Proportional to 264,335.80, 396,503.70 and 77,347.30

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Solution

The fourth proportional to 264,335.80, 396,503.70 and 77,347.30 is: 116,020.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,335.80 : 396,503.70 = 77,347.30 : x
  2. Step 2: Convert to fraction form
    264,335.80/396,503.70 = 77,347.30/x
  3. Step 3: Cross multiply
    264,335.80x = 396,503.70 × 77,347.30
  4. Step 4: Simplify right side
    264,335.80x = 30,668,490,635.01
  5. Step 5: Solve for x
    x = 30,668,490,635.01/264,335.80
  6. Step 6: Final answer
    x = 116,020.95

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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.