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Finding the Fourth Proportional to 74,384.68, 102,621.18 and 47,520.22

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Solution

The fourth proportional to 74,384.68, 102,621.18 and 47,520.22 is: 65,558.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,384.68 : 102,621.18 = 47,520.22 : x
  2. Step 2: Convert to fraction form
    74,384.68/102,621.18 = 47,520.22/x
  3. Step 3: Cross multiply
    74,384.68x = 102,621.18 × 47,520.22
  4. Step 4: Simplify right side
    74,384.68x = 4,876,581,050.26
  5. Step 5: Solve for x
    x = 4,876,581,050.26/74,384.68
  6. Step 6: Final answer
    x = 65,558.94

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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.