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Finding the Fourth Proportional to 161,662.20, 242,476.20 and 43,345.50

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Solution

The fourth proportional to 161,662.20, 242,476.20 and 43,345.50 is: 65,013.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,662.20 : 242,476.20 = 43,345.50 : x
  2. Step 2: Convert to fraction form
    161,662.20/242,476.20 = 43,345.50/x
  3. Step 3: Cross multiply
    161,662.20x = 242,476.20 × 43,345.50
  4. Step 4: Simplify right side
    161,662.20x = 10,510,252,127.10
  5. Step 5: Solve for x
    x = 10,510,252,127.10/161,662.20
  6. Step 6: Final answer
    x = 65,013.67

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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.