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Finding the Fourth Proportional to 681,850.35, 940,607.55 and 520,425.14

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Solution

The fourth proportional to 681,850.35, 940,607.55 and 520,425.14 is: 717,922.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,850.35 : 940,607.55 = 520,425.14 : x
  2. Step 2: Convert to fraction form
    681,850.35/940,607.55 = 520,425.14/x
  3. Step 3: Cross multiply
    681,850.35x = 940,607.55 × 520,425.14
  4. Step 4: Simplify right side
    681,850.35x = 489,515,811,190.77
  5. Step 5: Solve for x
    x = 489,515,811,190.77/681,850.35
  6. Step 6: Final answer
    x = 717,922.65

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.