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Finding the Fourth Proportional to 54,392.40, 81,491.40 and 46,616.40

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Solution

The fourth proportional to 54,392.40, 81,491.40 and 46,616.40 is: 69,841.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,392.40 : 81,491.40 = 46,616.40 : x
  2. Step 2: Convert to fraction form
    54,392.40/81,491.40 = 46,616.40/x
  3. Step 3: Cross multiply
    54,392.40x = 81,491.40 × 46,616.40
  4. Step 4: Simplify right side
    54,392.40x = 3,798,835,698.96
  5. Step 5: Solve for x
    x = 3,798,835,698.96/54,392.40
  6. Step 6: Final answer
    x = 69,841.30

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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.