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Finding the Fourth Proportional to 19,980.46, 29,973.91 and 7,501.44

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Solution

The fourth proportional to 19,980.46, 29,973.91 and 7,501.44 is: 11,253.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.46 : 29,973.91 = 7,501.44 : x
  2. Step 2: Convert to fraction form
    19,980.46/29,973.91 = 7,501.44/x
  3. Step 3: Cross multiply
    19,980.46x = 29,973.91 × 7,501.44
  4. Step 4: Simplify right side
    19,980.46x = 224,847,487.43
  5. Step 5: Solve for x
    x = 224,847,487.43/19,980.46
  6. Step 6: Final answer
    x = 11,253.37

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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.