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Finding the Fourth Proportional to 59,913, 89,818.74 and 40,131

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Solution

The fourth proportional to 59,913, 89,818.74 and 40,131 is: 60,162.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,913 : 89,818.74 = 40,131 : x
  2. Step 2: Convert to fraction form
    59,913/89,818.74 = 40,131/x
  3. Step 3: Cross multiply
    59,913x = 89,818.74 × 40,131
  4. Step 4: Simplify right side
    59,913x = 3,604,515,854.94
  5. Step 5: Solve for x
    x = 3,604,515,854.94/59,913
  6. Step 6: Final answer
    x = 60,162.50

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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.