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Finding the Fourth Proportional to 219,672.54, 329,510.57 and 143,835.03

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Solution

The fourth proportional to 219,672.54, 329,510.57 and 143,835.03 is: 215,753.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,672.54 : 329,510.57 = 143,835.03 : x
  2. Step 2: Convert to fraction form
    219,672.54/329,510.57 = 143,835.03/x
  3. Step 3: Cross multiply
    219,672.54x = 329,510.57 × 143,835.03
  4. Step 4: Simplify right side
    219,672.54x = 47,395,162,002.09
  5. Step 5: Solve for x
    x = 47,395,162,002.09/219,672.54
  6. Step 6: Final answer
    x = 215,753.69

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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.