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Finding the Fourth Proportional to 615,067.90, 922,273.80 and 259,680.40

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Solution

The fourth proportional to 615,067.90, 922,273.80 and 259,680.40 is: 389,382.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,067.90 : 922,273.80 = 259,680.40 : x
  2. Step 2: Convert to fraction form
    615,067.90/922,273.80 = 259,680.40/x
  3. Step 3: Cross multiply
    615,067.90x = 922,273.80 × 259,680.40
  4. Step 4: Simplify right side
    615,067.90x = 239,496,429,293.52
  5. Step 5: Solve for x
    x = 239,496,429,293.52/615,067.90
  6. Step 6: Final answer
    x = 389,382.10

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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.