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Finding the Fourth Proportional to 19,995.49, 29,989.54 and 7,342.48

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Solution

The fourth proportional to 19,995.49, 29,989.54 and 7,342.48 is: 11,012.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,995.49 : 29,989.54 = 7,342.48 : x
  2. Step 2: Convert to fraction form
    19,995.49/29,989.54 = 7,342.48/x
  3. Step 3: Cross multiply
    19,995.49x = 29,989.54 × 7,342.48
  4. Step 4: Simplify right side
    19,995.49x = 220,197,597.66
  5. Step 5: Solve for x
    x = 220,197,597.66/19,995.49
  6. Step 6: Final answer
    x = 11,012.36

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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.