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Finding the Fourth Proportional to 219,840.49, 329,649.85 and 156,624.49

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Solution

The fourth proportional to 219,840.49, 329,649.85 and 156,624.49 is: 234,857.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,840.49 : 329,649.85 = 156,624.49 : x
  2. Step 2: Convert to fraction form
    219,840.49/329,649.85 = 156,624.49/x
  3. Step 3: Cross multiply
    219,840.49x = 329,649.85 × 156,624.49
  4. Step 4: Simplify right side
    219,840.49x = 51,631,239,634.83
  5. Step 5: Solve for x
    x = 51,631,239,634.83/219,840.49
  6. Step 6: Final answer
    x = 234,857.74

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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.