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Finding the Fourth Proportional to 141,216.64, 211,855.44 and 47,720.32

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Solution

The fourth proportional to 141,216.64, 211,855.44 and 47,720.32 is: 71,590.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,216.64 : 211,855.44 = 47,720.32 : x
  2. Step 2: Convert to fraction form
    141,216.64/211,855.44 = 47,720.32/x
  3. Step 3: Cross multiply
    141,216.64x = 211,855.44 × 47,720.32
  4. Step 4: Simplify right side
    141,216.64x = 10,109,809,390.54
  5. Step 5: Solve for x
    x = 10,109,809,390.54/141,216.64
  6. Step 6: Final answer
    x = 71,590.78

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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.