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Finding the Fourth Proportional to 118,049.20, 176,958.60 and 105,607.60

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Solution

The fourth proportional to 118,049.20, 176,958.60 and 105,607.60 is: 158,308.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,049.20 : 176,958.60 = 105,607.60 : x
  2. Step 2: Convert to fraction form
    118,049.20/176,958.60 = 105,607.60/x
  3. Step 3: Cross multiply
    118,049.20x = 176,958.60 × 105,607.60
  4. Step 4: Simplify right side
    118,049.20x = 18,688,173,045.36
  5. Step 5: Solve for x
    x = 18,688,173,045.36/118,049.20
  6. Step 6: Final answer
    x = 158,308.34

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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.