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Finding the Fourth Proportional to 48,341.86, 72,509.85 and 28,745.12

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Solution

The fourth proportional to 48,341.86, 72,509.85 and 28,745.12 is: 43,115.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,341.86 : 72,509.85 = 28,745.12 : x
  2. Step 2: Convert to fraction form
    48,341.86/72,509.85 = 28,745.12/x
  3. Step 3: Cross multiply
    48,341.86x = 72,509.85 × 28,745.12
  4. Step 4: Simplify right side
    48,341.86x = 2,084,304,339.43
  5. Step 5: Solve for x
    x = 2,084,304,339.43/48,341.86
  6. Step 6: Final answer
    x = 43,115.94

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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.