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Finding the Fourth Proportional to 448,870.13, 619,453.74 and 247,679.09

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Solution

The fourth proportional to 448,870.13, 619,453.74 and 247,679.09 is: 341,804.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,870.13 : 619,453.74 = 247,679.09 : x
  2. Step 2: Convert to fraction form
    448,870.13/619,453.74 = 247,679.09/x
  3. Step 3: Cross multiply
    448,870.13x = 619,453.74 × 247,679.09
  4. Step 4: Simplify right side
    448,870.13x = 153,425,735,523.03
  5. Step 5: Solve for x
    x = 153,425,735,523.03/448,870.13
  6. Step 6: Final answer
    x = 341,804.29

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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.