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Finding the Fourth Proportional to 353,084.46, 529,621.91 and 86,847.28

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Solution

The fourth proportional to 353,084.46, 529,621.91 and 86,847.28 is: 130,269.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,084.46 : 529,621.91 = 86,847.28 : x
  2. Step 2: Convert to fraction form
    353,084.46/529,621.91 = 86,847.28/x
  3. Step 3: Cross multiply
    353,084.46x = 529,621.91 × 86,847.28
  4. Step 4: Simplify right side
    353,084.46x = 45,996,220,553.61
  5. Step 5: Solve for x
    x = 45,996,220,553.61/353,084.46
  6. Step 6: Final answer
    x = 130,269.74

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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.