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Finding the Fourth Proportional to 73,633.99, 110,436.88 and 20,312.70

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Solution

The fourth proportional to 73,633.99, 110,436.88 and 20,312.70 is: 30,465.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,633.99 : 110,436.88 = 20,312.70 : x
  2. Step 2: Convert to fraction form
    73,633.99/110,436.88 = 20,312.70/x
  3. Step 3: Cross multiply
    73,633.99x = 110,436.88 × 20,312.70
  4. Step 4: Simplify right side
    73,633.99x = 2,243,271,212.38
  5. Step 5: Solve for x
    x = 2,243,271,212.38/73,633.99
  6. Step 6: Final answer
    x = 30,465.16

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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.