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Finding the Fourth Proportional to 822,463.20, 1,134,879.12 and 483,040.80

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Solution

The fourth proportional to 822,463.20, 1,134,879.12 and 483,040.80 is: 666,525.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,463.20 : 1,134,879.12 = 483,040.80 : x
  2. Step 2: Convert to fraction form
    822,463.20/1,134,879.12 = 483,040.80/x
  3. Step 3: Cross multiply
    822,463.20x = 1,134,879.12 × 483,040.80
  4. Step 4: Simplify right side
    822,463.20x = 548,192,918,028.10
  5. Step 5: Solve for x
    x = 548,192,918,028.10/822,463.20
  6. Step 6: Final answer
    x = 666,525.77

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Double scale
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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.