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Finding the Fourth Proportional to 193,298, 266,751.72 and 112,780.88

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Solution

The fourth proportional to 193,298, 266,751.72 and 112,780.88 is: 155,637.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,298 : 266,751.72 = 112,780.88 : x
  2. Step 2: Convert to fraction form
    193,298/266,751.72 = 112,780.88/x
  3. Step 3: Cross multiply
    193,298x = 266,751.72 × 112,780.88
  4. Step 4: Simplify right side
    193,298x = 30,084,493,723.11
  5. Step 5: Solve for x
    x = 30,084,493,723.11/193,298
  6. Step 6: Final answer
    x = 155,637.89

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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.