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Finding the Fourth Proportional to 353,648.92, 530,468.16 and 87,409.46

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Solution

The fourth proportional to 353,648.92, 530,468.16 and 87,409.46 is: 131,112.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,648.92 : 530,468.16 = 87,409.46 : x
  2. Step 2: Convert to fraction form
    353,648.92/530,468.16 = 87,409.46/x
  3. Step 3: Cross multiply
    353,648.92x = 530,468.16 × 87,409.46
  4. Step 4: Simplify right side
    353,648.92x = 46,367,935,412.79
  5. Step 5: Solve for x
    x = 46,367,935,412.79/353,648.92
  6. Step 6: Final answer
    x = 131,112.90

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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.