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Finding the Fourth Proportional to 68,995.92, 103,461.12 and 31,544.88

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Solution

The fourth proportional to 68,995.92, 103,461.12 and 31,544.88 is: 47,302.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,995.92 : 103,461.12 = 31,544.88 : x
  2. Step 2: Convert to fraction form
    68,995.92/103,461.12 = 31,544.88/x
  3. Step 3: Cross multiply
    68,995.92x = 103,461.12 × 31,544.88
  4. Step 4: Simplify right side
    68,995.92x = 3,263,668,615.07
  5. Step 5: Solve for x
    x = 3,263,668,615.07/68,995.92
  6. Step 6: Final answer
    x = 47,302.34

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1.5x scale

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.