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Finding the Fourth Proportional to 118,243.70, 177,365.55 and 103,037.30

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Solution

The fourth proportional to 118,243.70, 177,365.55 and 103,037.30 is: 154,555.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,243.70 : 177,365.55 = 103,037.30 : x
  2. Step 2: Convert to fraction form
    118,243.70/177,365.55 = 103,037.30/x
  3. Step 3: Cross multiply
    118,243.70x = 177,365.55 × 103,037.30
  4. Step 4: Simplify right side
    118,243.70x = 18,275,267,385.02
  5. Step 5: Solve for x
    x = 18,275,267,385.02/118,243.70
  6. Step 6: Final answer
    x = 154,555.95

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1.5x scale

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.