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Finding the Fourth Proportional to 353,443.91, 530,215.10 and 113,565.03

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Solution

The fourth proportional to 353,443.91, 530,215.10 and 113,565.03 is: 170,363.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,443.91 : 530,215.10 = 113,565.03 : x
  2. Step 2: Convert to fraction form
    353,443.91/530,215.10 = 113,565.03/x
  3. Step 3: Cross multiply
    353,443.91x = 530,215.10 × 113,565.03
  4. Step 4: Simplify right side
    353,443.91x = 60,213,893,170.13
  5. Step 5: Solve for x
    x = 60,213,893,170.13/353,443.91
  6. Step 6: Final answer
    x = 170,363.37

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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.