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Finding the Fourth Proportional to 67,815.84, 93,615.12 and 63,564.96

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Solution

The fourth proportional to 67,815.84, 93,615.12 and 63,564.96 is: 87,747.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,815.84 : 93,615.12 = 63,564.96 : x
  2. Step 2: Convert to fraction form
    67,815.84/93,615.12 = 63,564.96/x
  3. Step 3: Cross multiply
    67,815.84x = 93,615.12 × 63,564.96
  4. Step 4: Simplify right side
    67,815.84x = 5,950,641,358.20
  5. Step 5: Solve for x
    x = 5,950,641,358.20/67,815.84
  6. Step 6: Final answer
    x = 87,747.07

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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.