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Finding the Fourth Proportional to 386,313.80, 579,470.70 and 244,596.20

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Solution

The fourth proportional to 386,313.80, 579,470.70 and 244,596.20 is: 366,894.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,313.80 : 579,470.70 = 244,596.20 : x
  2. Step 2: Convert to fraction form
    386,313.80/579,470.70 = 244,596.20/x
  3. Step 3: Cross multiply
    386,313.80x = 579,470.70 × 244,596.20
  4. Step 4: Simplify right side
    386,313.80x = 141,736,331,231.34
  5. Step 5: Solve for x
    x = 141,736,331,231.34/386,313.80
  6. Step 6: Final answer
    x = 366,894.30

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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.