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Finding the Fourth Proportional to 518,563.20, 776,923.20 and 444,835.20

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Solution

The fourth proportional to 518,563.20, 776,923.20 and 444,835.20 is: 666,462.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,563.20 : 776,923.20 = 444,835.20 : x
  2. Step 2: Convert to fraction form
    518,563.20/776,923.20 = 444,835.20/x
  3. Step 3: Cross multiply
    518,563.20x = 776,923.20 × 444,835.20
  4. Step 4: Simplify right side
    518,563.20x = 345,602,787,056.64
  5. Step 5: Solve for x
    x = 345,602,787,056.64/518,563.20
  6. Step 6: Final answer
    x = 666,462.23

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Double scale
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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.