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Finding the Fourth Proportional to 641,680.90, 885,540.54 and 369,727.72

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Solution

The fourth proportional to 641,680.90, 885,540.54 and 369,727.72 is: 510,236.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,680.90 : 885,540.54 = 369,727.72 : x
  2. Step 2: Convert to fraction form
    641,680.90/885,540.54 = 369,727.72/x
  3. Step 3: Cross multiply
    641,680.90x = 885,540.54 × 369,727.72
  4. Step 4: Simplify right side
    641,680.90x = 327,408,884,821.77
  5. Step 5: Solve for x
    x = 327,408,884,821.77/641,680.90
  6. Step 6: Final answer
    x = 510,236.29

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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.