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Finding the Fourth Proportional to 694,398.68, 958,261.56 and 407,944.88

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Solution

The fourth proportional to 694,398.68, 958,261.56 and 407,944.88 is: 562,958.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,398.68 : 958,261.56 = 407,944.88 : x
  2. Step 2: Convert to fraction form
    694,398.68/958,261.56 = 407,944.88/x
  3. Step 3: Cross multiply
    694,398.68x = 958,261.56 × 407,944.88
  4. Step 4: Simplify right side
    694,398.68x = 390,917,897,102.81
  5. Step 5: Solve for x
    x = 390,917,897,102.81/694,398.68
  6. Step 6: Final answer
    x = 562,958.87

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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.