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Finding the Fourth Proportional to 423,021, 634,548.78 and 107,486.04

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Solution

The fourth proportional to 423,021, 634,548.78 and 107,486.04 is: 161,233.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,021 : 634,548.78 = 107,486.04 : x
  2. Step 2: Convert to fraction form
    423,021/634,548.78 = 107,486.04/x
  3. Step 3: Cross multiply
    423,021x = 634,548.78 × 107,486.04
  4. Step 4: Simplify right side
    423,021x = 68,205,135,549.03
  5. Step 5: Solve for x
    x = 68,205,135,549.03/423,021
  6. Step 6: Final answer
    x = 161,233.45

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.