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Finding the Fourth Proportional to 386,317.80, 579,476.70 and 244,600.20

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Solution

The fourth proportional to 386,317.80, 579,476.70 and 244,600.20 is: 366,900.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,317.80 : 579,476.70 = 244,600.20 : x
  2. Step 2: Convert to fraction form
    386,317.80/579,476.70 = 244,600.20/x
  3. Step 3: Cross multiply
    386,317.80x = 579,476.70 × 244,600.20
  4. Step 4: Simplify right side
    386,317.80x = 141,740,116,715.34
  5. Step 5: Solve for x
    x = 141,740,116,715.34/386,317.80
  6. Step 6: Final answer
    x = 366,900.30

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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.