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Finding the Fourth Proportional to 54,392.64, 81,574.08 and 14,940.40

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Solution

The fourth proportional to 54,392.64, 81,574.08 and 14,940.40 is: 22,406.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,392.64 : 81,574.08 = 14,940.40 : x
  2. Step 2: Convert to fraction form
    54,392.64/81,574.08 = 14,940.40/x
  3. Step 3: Cross multiply
    54,392.64x = 81,574.08 × 14,940.40
  4. Step 4: Simplify right side
    54,392.64x = 1,218,749,384.83
  5. Step 5: Solve for x
    x = 1,218,749,384.83/54,392.64
  6. Step 6: Final answer
    x = 22,406.51

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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.