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Finding the Fourth Proportional to 518,555.20, 776,911.20 and 444,827.20

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Solution

The fourth proportional to 518,555.20, 776,911.20 and 444,827.20 is: 666,450.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,555.20 : 776,911.20 = 444,827.20 : x
  2. Step 2: Convert to fraction form
    518,555.20/776,911.20 = 444,827.20/x
  3. Step 3: Cross multiply
    518,555.20x = 776,911.20 × 444,827.20
  4. Step 4: Simplify right side
    518,555.20x = 345,591,233,744.64
  5. Step 5: Solve for x
    x = 345,591,233,744.64/518,555.20
  6. Step 6: Final answer
    x = 666,450.23

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1.5x scale

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.