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Finding the Fourth Proportional to 114,418.98, 171,639.86 and 42,391.17

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Solution

The fourth proportional to 114,418.98, 171,639.86 and 42,391.17 is: 63,590.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,418.98 : 171,639.86 = 42,391.17 : x
  2. Step 2: Convert to fraction form
    114,418.98/171,639.86 = 42,391.17/x
  3. Step 3: Cross multiply
    114,418.98x = 171,639.86 × 42,391.17
  4. Step 4: Simplify right side
    114,418.98x = 7,276,014,272.08
  5. Step 5: Solve for x
    x = 7,276,014,272.08/114,418.98
  6. Step 6: Final answer
    x = 63,590.97

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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.