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Finding the Fourth Proportional to 74,310.99, 102,524.13 and 42,457.38

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Solution

The fourth proportional to 74,310.99, 102,524.13 and 42,457.38 is: 58,576.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,310.99 : 102,524.13 = 42,457.38 : x
  2. Step 2: Convert to fraction form
    74,310.99/102,524.13 = 42,457.38/x
  3. Step 3: Cross multiply
    74,310.99x = 102,524.13 × 42,457.38
  4. Step 4: Simplify right side
    74,310.99x = 4,352,905,946.58
  5. Step 5: Solve for x
    x = 4,352,905,946.58/74,310.99
  6. Step 6: Final answer
    x = 58,576.88

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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.