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Finding the Fourth Proportional to 73,875.70, 110,813.55 and 72,709.30

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Solution

The fourth proportional to 73,875.70, 110,813.55 and 72,709.30 is: 109,063.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,875.70 : 110,813.55 = 72,709.30 : x
  2. Step 2: Convert to fraction form
    73,875.70/110,813.55 = 72,709.30/x
  3. Step 3: Cross multiply
    73,875.70x = 110,813.55 × 72,709.30
  4. Step 4: Simplify right side
    73,875.70x = 8,057,175,651.02
  5. Step 5: Solve for x
    x = 8,057,175,651.02/73,875.70
  6. Step 6: Final answer
    x = 109,063.95

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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.