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Finding the Fourth Proportional to 29,401.94, 40,574.34 and 15,972.91

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Solution

The fourth proportional to 29,401.94, 40,574.34 and 15,972.91 is: 22,042.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,401.94 : 40,574.34 = 15,972.91 : x
  2. Step 2: Convert to fraction form
    29,401.94/40,574.34 = 15,972.91/x
  3. Step 3: Cross multiply
    29,401.94x = 40,574.34 × 15,972.91
  4. Step 4: Simplify right side
    29,401.94x = 648,090,281.13
  5. Step 5: Solve for x
    x = 648,090,281.13/29,401.94
  6. Step 6: Final answer
    x = 22,042.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.