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Finding the Fourth Proportional to 563,641.57, 777,809.28 and 321,919.14

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Solution

The fourth proportional to 563,641.57, 777,809.28 and 321,919.14 is: 444,239.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,641.57 : 777,809.28 = 321,919.14 : x
  2. Step 2: Convert to fraction form
    563,641.57/777,809.28 = 321,919.14/x
  3. Step 3: Cross multiply
    563,641.57x = 777,809.28 × 321,919.14
  4. Step 4: Simplify right side
    563,641.57x = 250,391,694,501.62
  5. Step 5: Solve for x
    x = 250,391,694,501.62/563,641.57
  6. Step 6: Final answer
    x = 444,239.23

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1.5x scale

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.