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Finding the Fourth Proportional to 515,091.76, 772,480.44 and 356,189.20

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Solution

The fourth proportional to 515,091.76, 772,480.44 and 356,189.20 is: 534,175.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,091.76 : 772,480.44 = 356,189.20 : x
  2. Step 2: Convert to fraction form
    515,091.76/772,480.44 = 356,189.20/x
  3. Step 3: Cross multiply
    515,091.76x = 772,480.44 × 356,189.20
  4. Step 4: Simplify right side
    515,091.76x = 275,149,189,939.25
  5. Step 5: Solve for x
    x = 275,149,189,939.25/515,091.76
  6. Step 6: Final answer
    x = 534,175.10

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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.