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Finding the Fourth Proportional to 210,460.32, 315,631.28 and 58,622.88

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Solution

The fourth proportional to 210,460.32, 315,631.28 and 58,622.88 is: 87,917.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,460.32 : 315,631.28 = 58,622.88 : x
  2. Step 2: Convert to fraction form
    210,460.32/315,631.28 = 58,622.88/x
  3. Step 3: Cross multiply
    210,460.32x = 315,631.28 × 58,622.88
  4. Step 4: Simplify right side
    210,460.32x = 18,503,214,651.69
  5. Step 5: Solve for x
    x = 18,503,214,651.69/210,460.32
  6. Step 6: Final answer
    x = 87,917.83

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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.