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Finding the Fourth Proportional to 43,162.11, 64,719.54 and 15,074.82

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Solution

The fourth proportional to 43,162.11, 64,719.54 and 15,074.82 is: 22,603.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,162.11 : 64,719.54 = 15,074.82 : x
  2. Step 2: Convert to fraction form
    43,162.11/64,719.54 = 15,074.82/x
  3. Step 3: Cross multiply
    43,162.11x = 64,719.54 × 15,074.82
  4. Step 4: Simplify right side
    43,162.11x = 975,635,415.98
  5. Step 5: Solve for x
    x = 975,635,415.98/43,162.11
  6. Step 6: Final answer
    x = 22,603.98

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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.