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Finding the Fourth Proportional to 368,489.55, 552,741.17 and 115,765.30

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Solution

The fourth proportional to 368,489.55, 552,741.17 and 115,765.30 is: 173,650.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,489.55 : 552,741.17 = 115,765.30 : x
  2. Step 2: Convert to fraction form
    368,489.55/552,741.17 = 115,765.30/x
  3. Step 3: Cross multiply
    368,489.55x = 552,741.17 × 115,765.30
  4. Step 4: Simplify right side
    368,489.55x = 63,988,247,479.50
  5. Step 5: Solve for x
    x = 63,988,247,479.50/368,489.55
  6. Step 6: Final answer
    x = 173,650.10

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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.