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Finding the Fourth Proportional to 625,443.90, 863,112.30 and 338,963.94

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Solution

The fourth proportional to 625,443.90, 863,112.30 and 338,963.94 is: 467,770.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,443.90 : 863,112.30 = 338,963.94 : x
  2. Step 2: Convert to fraction form
    625,443.90/863,112.30 = 338,963.94/x
  3. Step 3: Cross multiply
    625,443.90x = 863,112.30 × 338,963.94
  4. Step 4: Simplify right side
    625,443.90x = 292,563,945,870.46
  5. Step 5: Solve for x
    x = 292,563,945,870.46/625,443.90
  6. Step 6: Final answer
    x = 467,770.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.