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Finding the Fourth Proportional to 355,331.40, 532,997.10 and 102,611.40

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Solution

The fourth proportional to 355,331.40, 532,997.10 and 102,611.40 is: 153,917.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,331.40 : 532,997.10 = 102,611.40 : x
  2. Step 2: Convert to fraction form
    355,331.40/532,997.10 = 102,611.40/x
  3. Step 3: Cross multiply
    355,331.40x = 532,997.10 × 102,611.40
  4. Step 4: Simplify right side
    355,331.40x = 54,691,578,626.94
  5. Step 5: Solve for x
    x = 54,691,578,626.94/355,331.40
  6. Step 6: Final answer
    x = 153,917.10

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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.