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Finding the Fourth Proportional to 58,288.44, 87,478.40 and 40,643.40

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Solution

The fourth proportional to 58,288.44, 87,478.40 and 40,643.40 is: 60,996.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,288.44 : 87,478.40 = 40,643.40 : x
  2. Step 2: Convert to fraction form
    58,288.44/87,478.40 = 40,643.40/x
  3. Step 3: Cross multiply
    58,288.44x = 87,478.40 × 40,643.40
  4. Step 4: Simplify right side
    58,288.44x = 3,555,419,602.56
  5. Step 5: Solve for x
    x = 3,555,419,602.56/58,288.44
  6. Step 6: Final answer
    x = 60,996.99

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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.