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Finding the Fourth Proportional to 29,574.91, 40,811.54 and 16,143.42

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Solution

The fourth proportional to 29,574.91, 40,811.54 and 16,143.42 is: 22,276.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,574.91 : 40,811.54 = 16,143.42 : x
  2. Step 2: Convert to fraction form
    29,574.91/40,811.54 = 16,143.42/x
  3. Step 3: Cross multiply
    29,574.91x = 40,811.54 × 16,143.42
  4. Step 4: Simplify right side
    29,574.91x = 658,837,831.07
  5. Step 5: Solve for x
    x = 658,837,831.07/29,574.91
  6. Step 6: Final answer
    x = 22,276.92

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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.