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Finding the Fourth Proportional to 136,881.73, 188,894.78 and 76,453.23

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Solution

The fourth proportional to 136,881.73, 188,894.78 and 76,453.23 is: 105,504.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,881.73 : 188,894.78 = 76,453.23 : x
  2. Step 2: Convert to fraction form
    136,881.73/188,894.78 = 76,453.23/x
  3. Step 3: Cross multiply
    136,881.73x = 188,894.78 × 76,453.23
  4. Step 4: Simplify right side
    136,881.73x = 14,441,616,061.14
  5. Step 5: Solve for x
    x = 14,441,616,061.14/136,881.73
  6. Step 6: Final answer
    x = 105,504.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.