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Finding the Fourth Proportional to 74,746.76, 111,993.26 and 45,102.30

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Solution

The fourth proportional to 74,746.76, 111,993.26 and 45,102.30 is: 67,576.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,746.76 : 111,993.26 = 45,102.30 : x
  2. Step 2: Convert to fraction form
    74,746.76/111,993.26 = 45,102.30/x
  3. Step 3: Cross multiply
    74,746.76x = 111,993.26 × 45,102.30
  4. Step 4: Simplify right side
    74,746.76x = 5,051,153,384.99
  5. Step 5: Solve for x
    x = 5,051,153,384.99/74,746.76
  6. Step 6: Final answer
    x = 67,576.89

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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.