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Finding the Fourth Proportional to 423,731.30, 635,597.96 and 103,884.58

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Solution

The fourth proportional to 423,731.30, 635,597.96 and 103,884.58 is: 155,827.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,731.30 : 635,597.96 = 103,884.58 : x
  2. Step 2: Convert to fraction form
    423,731.30/635,597.96 = 103,884.58/x
  3. Step 3: Cross multiply
    423,731.30x = 635,597.96 × 103,884.58
  4. Step 4: Simplify right side
    423,731.30x = 66,028,827,123.46
  5. Step 5: Solve for x
    x = 66,028,827,123.46/423,731.30
  6. Step 6: Final answer
    x = 155,827.12

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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.