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Finding the Fourth Proportional to 633,889.58, 951,141.92 and 278,857.47

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Solution

The fourth proportional to 633,889.58, 951,141.92 and 278,857.47 is: 418,421.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,889.58 : 951,141.92 = 278,857.47 : x
  2. Step 2: Convert to fraction form
    633,889.58/951,141.92 = 278,857.47/x
  3. Step 3: Cross multiply
    633,889.58x = 951,141.92 × 278,857.47
  4. Step 4: Simplify right side
    633,889.58x = 265,233,028,027.86
  5. Step 5: Solve for x
    x = 265,233,028,027.86/633,889.58
  6. Step 6: Final answer
    x = 418,421.50

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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.