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Finding the Fourth Proportional to 65,992.40, 99,054.50 and 36,424.16

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Solution

The fourth proportional to 65,992.40, 99,054.50 and 36,424.16 is: 54,672.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,992.40 : 99,054.50 = 36,424.16 : x
  2. Step 2: Convert to fraction form
    65,992.40/99,054.50 = 36,424.16/x
  3. Step 3: Cross multiply
    65,992.40x = 99,054.50 × 36,424.16
  4. Step 4: Simplify right side
    65,992.40x = 3,607,976,956.72
  5. Step 5: Solve for x
    x = 3,607,976,956.72/65,992.40
  6. Step 6: Final answer
    x = 54,672.61

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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.