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Finding the Fourth Proportional to 521,726.60, 783,108.30 and 255,787.40

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Solution

The fourth proportional to 521,726.60, 783,108.30 and 255,787.40 is: 383,935.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,726.60 : 783,108.30 = 255,787.40 : x
  2. Step 2: Convert to fraction form
    521,726.60/783,108.30 = 255,787.40/x
  3. Step 3: Cross multiply
    521,726.60x = 783,108.30 × 255,787.40
  4. Step 4: Simplify right side
    521,726.60x = 200,309,235,975.42
  5. Step 5: Solve for x
    x = 200,309,235,975.42/521,726.60
  6. Step 6: Final answer
    x = 383,935.26

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1.5x scale

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.