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Finding the Fourth Proportional to 395,270.67, 592,916.57 and 129,047.31

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Solution

The fourth proportional to 395,270.67, 592,916.57 and 129,047.31 is: 193,574.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,270.67 : 592,916.57 = 129,047.31 : x
  2. Step 2: Convert to fraction form
    395,270.67/592,916.57 = 129,047.31/x
  3. Step 3: Cross multiply
    395,270.67x = 592,916.57 × 129,047.31
  4. Step 4: Simplify right side
    395,270.67x = 76,514,287,767.69
  5. Step 5: Solve for x
    x = 76,514,287,767.69/395,270.67
  6. Step 6: Final answer
    x = 193,574.41

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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.