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Finding the Fourth Proportional to 524,058.60, 786,087.90 and 515,310.60

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Solution

The fourth proportional to 524,058.60, 786,087.90 and 515,310.60 is: 772,965.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,058.60 : 786,087.90 = 515,310.60 : x
  2. Step 2: Convert to fraction form
    524,058.60/786,087.90 = 515,310.60/x
  3. Step 3: Cross multiply
    524,058.60x = 786,087.90 × 515,310.60
  4. Step 4: Simplify right side
    524,058.60x = 405,079,427,401.74
  5. Step 5: Solve for x
    x = 405,079,427,401.74/524,058.60
  6. Step 6: Final answer
    x = 772,965.90

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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.