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Finding the Fourth Proportional to 386,834.16, 580,044.62 and 134,049.80

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Solution

The fourth proportional to 386,834.16, 580,044.62 and 134,049.80 is: 201,003.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,834.16 : 580,044.62 = 134,049.80 : x
  2. Step 2: Convert to fraction form
    386,834.16/580,044.62 = 134,049.80/x
  3. Step 3: Cross multiply
    386,834.16x = 580,044.62 × 134,049.80
  4. Step 4: Simplify right side
    386,834.16x = 77,754,865,302.08
  5. Step 5: Solve for x
    x = 77,754,865,302.08/386,834.16
  6. Step 6: Final answer
    x = 201,003.10

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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.