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Finding the Fourth Proportional to 43,218.70, 64,723.52 and 35,768.32

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Solution

The fourth proportional to 43,218.70, 64,723.52 and 35,768.32 is: 53,565.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,218.70 : 64,723.52 = 35,768.32 : x
  2. Step 2: Convert to fraction form
    43,218.70/64,723.52 = 35,768.32/x
  3. Step 3: Cross multiply
    43,218.70x = 64,723.52 × 35,768.32
  4. Step 4: Simplify right side
    43,218.70x = 2,315,051,574.89
  5. Step 5: Solve for x
    x = 2,315,051,574.89/43,218.70
  6. Step 6: Final answer
    x = 53,565.97

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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.