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Finding the Fourth Proportional to 118,004.20, 176,811.90 and 58,712.20

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Solution

The fourth proportional to 118,004.20, 176,811.90 and 58,712.20 is: 87,971.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,004.20 : 176,811.90 = 58,712.20 : x
  2. Step 2: Convert to fraction form
    118,004.20/176,811.90 = 58,712.20/x
  3. Step 3: Cross multiply
    118,004.20x = 176,811.90 × 58,712.20
  4. Step 4: Simplify right side
    118,004.20x = 10,381,015,635.18
  5. Step 5: Solve for x
    x = 10,381,015,635.18/118,004.20
  6. Step 6: Final answer
    x = 87,971.58

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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.