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Finding the Fourth Proportional to 644,086.82, 888,867.56 and 357,606.88

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Solution

The fourth proportional to 644,086.82, 888,867.56 and 357,606.88 is: 493,512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,086.82 : 888,867.56 = 357,606.88 : x
  2. Step 2: Convert to fraction form
    644,086.82/888,867.56 = 357,606.88/x
  3. Step 3: Cross multiply
    644,086.82x = 888,867.56 × 357,606.88
  4. Step 4: Simplify right side
    644,086.82x = 317,865,154,864.81
  5. Step 5: Solve for x
    x = 317,865,154,864.81/644,086.82
  6. Step 6: Final answer
    x = 493,512.90

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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.