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Finding the Fourth Proportional to 67,689.64, 93,460.98 and 54,334.36

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Solution

The fourth proportional to 67,689.64, 93,460.98 and 54,334.36 is: 75,020.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,689.64 : 93,460.98 = 54,334.36 : x
  2. Step 2: Convert to fraction form
    67,689.64/93,460.98 = 54,334.36/x
  3. Step 3: Cross multiply
    67,689.64x = 93,460.98 × 54,334.36
  4. Step 4: Simplify right side
    67,689.64x = 5,078,142,533.27
  5. Step 5: Solve for x
    x = 5,078,142,533.27/67,689.64
  6. Step 6: Final answer
    x = 75,020.97

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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.