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Finding the Fourth Proportional to 644,717.09, 967,278.17 and 265,816.15

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Solution

The fourth proportional to 644,717.09, 967,278.17 and 265,816.15 is: 398,807.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,717.09 : 967,278.17 = 265,816.15 : x
  2. Step 2: Convert to fraction form
    644,717.09/967,278.17 = 265,816.15/x
  3. Step 3: Cross multiply
    644,717.09x = 967,278.17 × 265,816.15
  4. Step 4: Simplify right side
    644,717.09x = 257,118,157,374.79
  5. Step 5: Solve for x
    x = 257,118,157,374.79/644,717.09
  6. Step 6: Final answer
    x = 398,807.73

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Double scale
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Similar ratio
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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.