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Finding the Fourth Proportional to 358,949.62, 538,223.55 and 166,618.90

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Solution

The fourth proportional to 358,949.62, 538,223.55 and 166,618.90 is: 249,835.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,949.62 : 538,223.55 = 166,618.90 : x
  2. Step 2: Convert to fraction form
    358,949.62/538,223.55 = 166,618.90/x
  3. Step 3: Cross multiply
    358,949.62x = 538,223.55 × 166,618.90
  4. Step 4: Simplify right side
    358,949.62x = 89,678,215,855.10
  5. Step 5: Solve for x
    x = 89,678,215,855.10/358,949.62
  6. Step 6: Final answer
    x = 249,835.10

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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.