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Finding the Fourth Proportional to 86,393.55, 129,356.64 and 44,753.07

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Solution

The fourth proportional to 86,393.55, 129,356.64 and 44,753.07 is: 67,008.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,393.55 : 129,356.64 = 44,753.07 : x
  2. Step 2: Convert to fraction form
    86,393.55/129,356.64 = 44,753.07/x
  3. Step 3: Cross multiply
    86,393.55x = 129,356.64 × 44,753.07
  4. Step 4: Simplify right side
    86,393.55x = 5,789,106,764.88
  5. Step 5: Solve for x
    x = 5,789,106,764.88/86,393.55
  6. Step 6: Final answer
    x = 67,008.55

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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.