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Finding the Fourth Proportional to 250,805.91, 346,122.14 and 137,632.71

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Solution

The fourth proportional to 250,805.91, 346,122.14 and 137,632.71 is: 189,938.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,805.91 : 346,122.14 = 137,632.71 : x
  2. Step 2: Convert to fraction form
    250,805.91/346,122.14 = 137,632.71/x
  3. Step 3: Cross multiply
    250,805.91x = 346,122.14 × 137,632.71
  4. Step 4: Simplify right side
    250,805.91x = 47,637,727,431.04
  5. Step 5: Solve for x
    x = 47,637,727,431.04/250,805.91
  6. Step 6: Final answer
    x = 189,938.62

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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.