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Finding the Fourth Proportional to 142,750.80, 196,907.00 and 91,829.93

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Solution

The fourth proportional to 142,750.80, 196,907.00 and 91,829.93 is: 126,667.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,750.80 : 196,907.00 = 91,829.93 : x
  2. Step 2: Convert to fraction form
    142,750.80/196,907.00 = 91,829.93/x
  3. Step 3: Cross multiply
    142,750.80x = 196,907.00 × 91,829.93
  4. Step 4: Simplify right side
    142,750.80x = 18,081,954,582.83
  5. Step 5: Solve for x
    x = 18,081,954,582.83/142,750.80
  6. Step 6: Final answer
    x = 126,667.97

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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.