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Finding the Fourth Proportional to 140,969.58, 211,478.67 and 74,465.34

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Solution

The fourth proportional to 140,969.58, 211,478.67 and 74,465.34 is: 111,710.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,969.58 : 211,478.67 = 74,465.34 : x
  2. Step 2: Convert to fraction form
    140,969.58/211,478.67 = 74,465.34/x
  3. Step 3: Cross multiply
    140,969.58x = 211,478.67 × 74,465.34
  4. Step 4: Simplify right side
    140,969.58x = 15,747,831,064.30
  5. Step 5: Solve for x
    x = 15,747,831,064.30/140,969.58
  6. Step 6: Final answer
    x = 111,710.85

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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.