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Finding the Fourth Proportional to 158,762.88, 219,095.60 and 87,149.56

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Solution

The fourth proportional to 158,762.88, 219,095.60 and 87,149.56 is: 120,267.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,762.88 : 219,095.60 = 87,149.56 : x
  2. Step 2: Convert to fraction form
    158,762.88/219,095.60 = 87,149.56/x
  3. Step 3: Cross multiply
    158,762.88x = 219,095.60 × 87,149.56
  4. Step 4: Simplify right side
    158,762.88x = 19,094,085,137.94
  5. Step 5: Solve for x
    x = 19,094,085,137.94/158,762.88
  6. Step 6: Final answer
    x = 120,267.94

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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.