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Finding the Fourth Proportional to 641,305.08, 885,027.06 and 354,820.56

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Solution

The fourth proportional to 641,305.08, 885,027.06 and 354,820.56 is: 489,666.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,305.08 : 885,027.06 = 354,820.56 : x
  2. Step 2: Convert to fraction form
    641,305.08/885,027.06 = 354,820.56/x
  3. Step 3: Cross multiply
    641,305.08x = 885,027.06 × 354,820.56
  4. Step 4: Simplify right side
    641,305.08x = 314,025,797,044.35
  5. Step 5: Solve for x
    x = 314,025,797,044.35/641,305.08
  6. Step 6: Final answer
    x = 489,666.79

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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.