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Finding the Fourth Proportional to 368,434.40, 552,651.60 and 275,122.40

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Solution

The fourth proportional to 368,434.40, 552,651.60 and 275,122.40 is: 412,683.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,434.40 : 552,651.60 = 275,122.40 : x
  2. Step 2: Convert to fraction form
    368,434.40/552,651.60 = 275,122.40/x
  3. Step 3: Cross multiply
    368,434.40x = 552,651.60 × 275,122.40
  4. Step 4: Simplify right side
    368,434.40x = 152,046,834,555.84
  5. Step 5: Solve for x
    x = 152,046,834,555.84/368,434.40
  6. Step 6: Final answer
    x = 412,683.60

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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.