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Finding the Fourth Proportional to 118,580.20, 177,870.30 and 48,509.80

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Solution

The fourth proportional to 118,580.20, 177,870.30 and 48,509.80 is: 72,764.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,580.20 : 177,870.30 = 48,509.80 : x
  2. Step 2: Convert to fraction form
    118,580.20/177,870.30 = 48,509.80/x
  3. Step 3: Cross multiply
    118,580.20x = 177,870.30 × 48,509.80
  4. Step 4: Simplify right side
    118,580.20x = 8,628,452,678.94
  5. Step 5: Solve for x
    x = 8,628,452,678.94/118,580.20
  6. Step 6: Final answer
    x = 72,764.70

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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.