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Finding the Fourth Proportional to 641,286.08, 885,000.84 and 354,801.52

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Solution

The fourth proportional to 641,286.08, 885,000.84 and 354,801.52 is: 489,640.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,286.08 : 885,000.84 = 354,801.52 : x
  2. Step 2: Convert to fraction form
    641,286.08/885,000.84 = 354,801.52/x
  3. Step 3: Cross multiply
    641,286.08x = 885,000.84 × 354,801.52
  4. Step 4: Simplify right side
    641,286.08x = 313,999,643,233.28
  5. Step 5: Solve for x
    x = 313,999,643,233.28/641,286.08
  6. Step 6: Final answer
    x = 489,640.51

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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.