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Finding the Fourth Proportional to 423,884.34, 635,824.89 and 108,340.74

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Solution

The fourth proportional to 423,884.34, 635,824.89 and 108,340.74 is: 162,510.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,884.34 : 635,824.89 = 108,340.74 : x
  2. Step 2: Convert to fraction form
    423,884.34/635,824.89 = 108,340.74/x
  3. Step 3: Cross multiply
    423,884.34x = 635,824.89 × 108,340.74
  4. Step 4: Simplify right side
    423,884.34x = 68,885,739,093.02
  5. Step 5: Solve for x
    x = 68,885,739,093.02/423,884.34
  6. Step 6: Final answer
    x = 162,510.70

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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.