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Finding the Fourth Proportional to 67,668.72, 93,376.40 and 45,820.50

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Solution

The fourth proportional to 67,668.72, 93,376.40 and 45,820.50 is: 63,227.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,668.72 : 93,376.40 = 45,820.50 : x
  2. Step 2: Convert to fraction form
    67,668.72/93,376.40 = 45,820.50/x
  3. Step 3: Cross multiply
    67,668.72x = 93,376.40 × 45,820.50
  4. Step 4: Simplify right side
    67,668.72x = 4,278,553,107.10
  5. Step 5: Solve for x
    x = 4,278,553,107.10/67,668.72
  6. Step 6: Final answer
    x = 63,227.93

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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.