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Finding the Fourth Proportional to 219,896.73, 329,876.55 and 70,138.71

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Solution

The fourth proportional to 219,896.73, 329,876.55 and 70,138.71 is: 105,218.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,896.73 : 329,876.55 = 70,138.71 : x
  2. Step 2: Convert to fraction form
    219,896.73/329,876.55 = 70,138.71/x
  3. Step 3: Cross multiply
    219,896.73x = 329,876.55 × 70,138.71
  4. Step 4: Simplify right side
    219,896.73x = 23,137,115,676.25
  5. Step 5: Solve for x
    x = 23,137,115,676.25/219,896.73
  6. Step 6: Final answer
    x = 105,218.10

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1.5x scale

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.