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Finding the Fourth Proportional to 136,356.94, 188,011.56 and 93,357.28

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Solution

The fourth proportional to 136,356.94, 188,011.56 and 93,357.28 is: 128,722.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,356.94 : 188,011.56 = 93,357.28 : x
  2. Step 2: Convert to fraction form
    136,356.94/188,011.56 = 93,357.28/x
  3. Step 3: Cross multiply
    136,356.94x = 188,011.56 × 93,357.28
  4. Step 4: Simplify right side
    136,356.94x = 17,552,247,850.16
  5. Step 5: Solve for x
    x = 17,552,247,850.16/136,356.94
  6. Step 6: Final answer
    x = 128,722.81

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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.