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Finding the Fourth Proportional to 442,352.34, 663,518.79 and 126,811.98

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Solution

The fourth proportional to 442,352.34, 663,518.79 and 126,811.98 is: 190,215.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,352.34 : 663,518.79 = 126,811.98 : x
  2. Step 2: Convert to fraction form
    442,352.34/663,518.79 = 126,811.98/x
  3. Step 3: Cross multiply
    442,352.34x = 663,518.79 × 126,811.98
  4. Step 4: Simplify right side
    442,352.34x = 84,142,131,527.10
  5. Step 5: Solve for x
    x = 84,142,131,527.10/442,352.34
  6. Step 6: Final answer
    x = 190,215.18

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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.