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Finding the Fourth Proportional to 116,990.47, 175,485.72 and 28,243.90

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Solution

The fourth proportional to 116,990.47, 175,485.72 and 28,243.90 is: 42,365.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,990.47 : 175,485.72 = 28,243.90 : x
  2. Step 2: Convert to fraction form
    116,990.47/175,485.72 = 28,243.90/x
  3. Step 3: Cross multiply
    116,990.47x = 175,485.72 × 28,243.90
  4. Step 4: Simplify right side
    116,990.47x = 4,956,401,127.11
  5. Step 5: Solve for x
    x = 4,956,401,127.11/116,990.47
  6. Step 6: Final answer
    x = 42,365.85

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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.