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Finding the Fourth Proportional to 520,076.60, 779,240.10 and 444,843.80

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Solution

The fourth proportional to 520,076.60, 779,240.10 and 444,843.80 is: 666,517.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,076.60 : 779,240.10 = 444,843.80 : x
  2. Step 2: Convert to fraction form
    520,076.60/779,240.10 = 444,843.80/x
  3. Step 3: Cross multiply
    520,076.60x = 779,240.10 × 444,843.80
  4. Step 4: Simplify right side
    520,076.60x = 346,640,127,196.38
  5. Step 5: Solve for x
    x = 346,640,127,196.38/520,076.60
  6. Step 6: Final answer
    x = 666,517.45

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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.