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Finding the Fourth Proportional to 368,436.40, 552,654.60 and 275,124.40

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Solution

The fourth proportional to 368,436.40, 552,654.60 and 275,124.40 is: 412,686.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,436.40 : 552,654.60 = 275,124.40 : x
  2. Step 2: Convert to fraction form
    368,436.40/552,654.60 = 275,124.40/x
  3. Step 3: Cross multiply
    368,436.40x = 552,654.60 × 275,124.40
  4. Step 4: Simplify right side
    368,436.40x = 152,048,765,232.24
  5. Step 5: Solve for x
    x = 152,048,765,232.24/368,436.40
  6. Step 6: Final answer
    x = 412,686.60

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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.