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Finding the Fourth Proportional to 519,782.80, 779,674.20 and 125,798.80

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Solution

The fourth proportional to 519,782.80, 779,674.20 and 125,798.80 is: 188,698.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,782.80 : 779,674.20 = 125,798.80 : x
  2. Step 2: Convert to fraction form
    519,782.80/779,674.20 = 125,798.80/x
  3. Step 3: Cross multiply
    519,782.80x = 779,674.20 × 125,798.80
  4. Step 4: Simplify right side
    519,782.80x = 98,082,078,750.96
  5. Step 5: Solve for x
    x = 98,082,078,750.96/519,782.80
  6. Step 6: Final answer
    x = 188,698.20

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Double scale
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Similar ratio
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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.