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Finding the Fourth Proportional to 159,392.08, 219,962.50 and 87,772.38

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Solution

The fourth proportional to 159,392.08, 219,962.50 and 87,772.38 is: 121,126.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,392.08 : 219,962.50 = 87,772.38 : x
  2. Step 2: Convert to fraction form
    159,392.08/219,962.50 = 87,772.38/x
  3. Step 3: Cross multiply
    159,392.08x = 219,962.50 × 87,772.38
  4. Step 4: Simplify right side
    159,392.08x = 19,306,632,135.75
  5. Step 5: Solve for x
    x = 19,306,632,135.75/159,392.08
  6. Step 6: Final answer
    x = 121,126.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.