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Finding the Fourth Proportional to 70,244.48, 96,936.45 and 40,031.60

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Solution

The fourth proportional to 70,244.48, 96,936.45 and 40,031.60 is: 55,243.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,244.48 : 96,936.45 = 40,031.60 : x
  2. Step 2: Convert to fraction form
    70,244.48/96,936.45 = 40,031.60/x
  3. Step 3: Cross multiply
    70,244.48x = 96,936.45 × 40,031.60
  4. Step 4: Simplify right side
    70,244.48x = 3,880,521,191.82
  5. Step 5: Solve for x
    x = 3,880,521,191.82/70,244.48
  6. Step 6: Final answer
    x = 55,243.08

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.