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Finding the Fourth Proportional to 361,887.60, 542,568.96 and 243,264.72

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Solution

The fourth proportional to 361,887.60, 542,568.96 and 243,264.72 is: 364,720.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,887.60 : 542,568.96 = 243,264.72 : x
  2. Step 2: Convert to fraction form
    361,887.60/542,568.96 = 243,264.72/x
  3. Step 3: Cross multiply
    361,887.60x = 542,568.96 × 243,264.72
  4. Step 4: Simplify right side
    361,887.60x = 131,987,886,135.09
  5. Step 5: Solve for x
    x = 131,987,886,135.09/361,887.60
  6. Step 6: Final answer
    x = 364,720.67

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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.