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Finding the Fourth Proportional to 29,384.63, 40,550.81 and 15,955.88

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Solution

The fourth proportional to 29,384.63, 40,550.81 and 15,955.88 is: 22,019.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,384.63 : 40,550.81 = 15,955.88 : x
  2. Step 2: Convert to fraction form
    29,384.63/40,550.81 = 15,955.88/x
  3. Step 3: Cross multiply
    29,384.63x = 40,550.81 × 15,955.88
  4. Step 4: Simplify right side
    29,384.63x = 647,023,879.86
  5. Step 5: Solve for x
    x = 647,023,879.86/29,384.63
  6. Step 6: Final answer
    x = 22,019.13

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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.