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Finding the Fourth Proportional to 678,162.56, 936,034.24 and 391,848.96

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Solution

The fourth proportional to 678,162.56, 936,034.24 and 391,848.96 is: 540,849.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,162.56 : 936,034.24 = 391,848.96 : x
  2. Step 2: Convert to fraction form
    678,162.56/936,034.24 = 391,848.96/x
  3. Step 3: Cross multiply
    678,162.56x = 936,034.24 × 391,848.96
  4. Step 4: Simplify right side
    678,162.56x = 366,784,043,468.39
  5. Step 5: Solve for x
    x = 366,784,043,468.39/678,162.56
  6. Step 6: Final answer
    x = 540,849.74

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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.