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Finding the Fourth Proportional to 118,230.20, 176,999.70 and 105,788.60

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Solution

The fourth proportional to 118,230.20, 176,999.70 and 105,788.60 is: 158,373.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,230.20 : 176,999.70 = 105,788.60 : x
  2. Step 2: Convert to fraction form
    118,230.20/176,999.70 = 105,788.60/x
  3. Step 3: Cross multiply
    118,230.20x = 176,999.70 × 105,788.60
  4. Step 4: Simplify right side
    118,230.20x = 18,724,550,463.42
  5. Step 5: Solve for x
    x = 18,724,550,463.42/118,230.20
  6. Step 6: Final answer
    x = 158,373.67

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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.