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Finding the Fourth Proportional to 617,120.65, 925,769.51 and 190,693.70

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Solution

The fourth proportional to 617,120.65, 925,769.51 and 190,693.70 is: 286,067.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,120.65 : 925,769.51 = 190,693.70 : x
  2. Step 2: Convert to fraction form
    617,120.65/925,769.51 = 190,693.70/x
  3. Step 3: Cross multiply
    617,120.65x = 925,769.51 × 190,693.70
  4. Step 4: Simplify right side
    617,120.65x = 176,538,413,209.09
  5. Step 5: Solve for x
    x = 176,538,413,209.09/617,120.65
  6. Step 6: Final answer
    x = 286,067.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.