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Finding the Fourth Proportional to 112,976, 169,490.04 and 39,104

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Solution

The fourth proportional to 112,976, 169,490.04 and 39,104 is: 58,665.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,976 : 169,490.04 = 39,104 : x
  2. Step 2: Convert to fraction form
    112,976/169,490.04 = 39,104/x
  3. Step 3: Cross multiply
    112,976x = 169,490.04 × 39,104
  4. Step 4: Simplify right side
    112,976x = 6,627,738,524.16
  5. Step 5: Solve for x
    x = 6,627,738,524.16/112,976
  6. Step 6: Final answer
    x = 58,665.01

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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.