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Finding the Fourth Proportional to 21,545.98, 32,319.54 and 7,694.98

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Solution

The fourth proportional to 21,545.98, 32,319.54 and 7,694.98 is: 11,542.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,545.98 : 32,319.54 = 7,694.98 : x
  2. Step 2: Convert to fraction form
    21,545.98/32,319.54 = 7,694.98/x
  3. Step 3: Cross multiply
    21,545.98x = 32,319.54 × 7,694.98
  4. Step 4: Simplify right side
    21,545.98x = 248,698,213.91
  5. Step 5: Solve for x
    x = 248,698,213.91/21,545.98
  6. Step 6: Final answer
    x = 11,542.67

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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.