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Finding the Fourth Proportional to 70,550.46, 105,828.94 and 17,960.40

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Solution

The fourth proportional to 70,550.46, 105,828.94 and 17,960.40 is: 26,941.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,550.46 : 105,828.94 = 17,960.40 : x
  2. Step 2: Convert to fraction form
    70,550.46/105,828.94 = 17,960.40/x
  3. Step 3: Cross multiply
    70,550.46x = 105,828.94 × 17,960.40
  4. Step 4: Simplify right side
    70,550.46x = 1,900,730,093.98
  5. Step 5: Solve for x
    x = 1,900,730,093.98/70,550.46
  6. Step 6: Final answer
    x = 26,941.43

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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.