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Finding the Fourth Proportional to 93,813.74, 129,451.11 and 74,741.89

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Solution

The fourth proportional to 93,813.74, 129,451.11 and 74,741.89 is: 103,134.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,813.74 : 129,451.11 = 74,741.89 : x
  2. Step 2: Convert to fraction form
    93,813.74/129,451.11 = 74,741.89/x
  3. Step 3: Cross multiply
    93,813.74x = 129,451.11 × 74,741.89
  4. Step 4: Simplify right side
    93,813.74x = 9,675,420,624.00
  5. Step 5: Solve for x
    x = 9,675,420,624.00/93,813.74
  6. Step 6: Final answer
    x = 103,134.37

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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.