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Finding the Fourth Proportional to 340,805.80, 511,208.70 and 127,573.30

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Solution

The fourth proportional to 340,805.80, 511,208.70 and 127,573.30 is: 191,359.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,805.80 : 511,208.70 = 127,573.30 : x
  2. Step 2: Convert to fraction form
    340,805.80/511,208.70 = 127,573.30/x
  3. Step 3: Cross multiply
    340,805.80x = 511,208.70 × 127,573.30
  4. Step 4: Simplify right side
    340,805.80x = 65,216,580,847.71
  5. Step 5: Solve for x
    x = 65,216,580,847.71/340,805.80
  6. Step 6: Final answer
    x = 191,359.95

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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.