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Finding the Fourth Proportional to 136,208.92, 187,969.98 and 76,592.92

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Solution

The fourth proportional to 136,208.92, 187,969.98 and 76,592.92 is: 105,699.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,208.92 : 187,969.98 = 76,592.92 : x
  2. Step 2: Convert to fraction form
    136,208.92/187,969.98 = 76,592.92/x
  3. Step 3: Cross multiply
    136,208.92x = 187,969.98 × 76,592.92
  4. Step 4: Simplify right side
    136,208.92x = 14,397,169,640.54
  5. Step 5: Solve for x
    x = 14,397,169,640.54/136,208.92
  6. Step 6: Final answer
    x = 105,699.17

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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.