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Finding the Fourth Proportional to 515,817.80, 773,726.70 and 338,870.60

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Solution

The fourth proportional to 515,817.80, 773,726.70 and 338,870.60 is: 508,305.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,817.80 : 773,726.70 = 338,870.60 : x
  2. Step 2: Convert to fraction form
    515,817.80/773,726.70 = 338,870.60/x
  3. Step 3: Cross multiply
    515,817.80x = 773,726.70 × 338,870.60
  4. Step 4: Simplify right side
    515,817.80x = 262,193,231,065.02
  5. Step 5: Solve for x
    x = 262,193,231,065.02/515,817.80
  6. Step 6: Final answer
    x = 508,305.90

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Similar ratio
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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.