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Finding the Fourth Proportional to 19,412.54, 29,118.99 and 5,561.54

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Solution

The fourth proportional to 19,412.54, 29,118.99 and 5,561.54 is: 8,342.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,412.54 : 29,118.99 = 5,561.54 : x
  2. Step 2: Convert to fraction form
    19,412.54/29,118.99 = 5,561.54/x
  3. Step 3: Cross multiply
    19,412.54x = 29,118.99 × 5,561.54
  4. Step 4: Simplify right side
    19,412.54x = 161,946,427.64
  5. Step 5: Solve for x
    x = 161,946,427.64/19,412.54
  6. Step 6: Final answer
    x = 8,342.36

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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.