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Finding the Fourth Proportional to 219,331.40, 328,997.10 and 94,672.40

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Solution

The fourth proportional to 219,331.40, 328,997.10 and 94,672.40 is: 142,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,331.40 : 328,997.10 = 94,672.40 : x
  2. Step 2: Convert to fraction form
    219,331.40/328,997.10 = 94,672.40/x
  3. Step 3: Cross multiply
    219,331.40x = 328,997.10 × 94,672.40
  4. Step 4: Simplify right side
    219,331.40x = 31,146,945,050.04
  5. Step 5: Solve for x
    x = 31,146,945,050.04/219,331.40
  6. Step 6: Final answer
    x = 142,008.60

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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.