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Finding the Fourth Proportional to 502,536.96, 693,499.32 and 287,676.36

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Solution

The fourth proportional to 502,536.96, 693,499.32 and 287,676.36 is: 396,992.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,536.96 : 693,499.32 = 287,676.36 : x
  2. Step 2: Convert to fraction form
    502,536.96/693,499.32 = 287,676.36/x
  3. Step 3: Cross multiply
    502,536.96x = 693,499.32 × 287,676.36
  4. Step 4: Simplify right side
    502,536.96x = 199,503,360,040.08
  5. Step 5: Solve for x
    x = 199,503,360,040.08/502,536.96
  6. Step 6: Final answer
    x = 396,992.41

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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.