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Finding the Fourth Proportional to 228,688.62, 343,066.14 and 70,929.78

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Solution

The fourth proportional to 228,688.62, 343,066.14 and 70,929.78 is: 106,404.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,688.62 : 343,066.14 = 70,929.78 : x
  2. Step 2: Convert to fraction form
    228,688.62/343,066.14 = 70,929.78/x
  3. Step 3: Cross multiply
    228,688.62x = 343,066.14 × 70,929.78
  4. Step 4: Simplify right side
    228,688.62x = 24,333,605,835.65
  5. Step 5: Solve for x
    x = 24,333,605,835.65/228,688.62
  6. Step 6: Final answer
    x = 106,404.97

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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.