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Finding the Fourth Proportional to 118,065.80, 177,098.70 and 70,826.60

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Solution

The fourth proportional to 118,065.80, 177,098.70 and 70,826.60 is: 106,239.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,065.80 : 177,098.70 = 70,826.60 : x
  2. Step 2: Convert to fraction form
    118,065.80/177,098.70 = 70,826.60/x
  3. Step 3: Cross multiply
    118,065.80x = 177,098.70 × 70,826.60
  4. Step 4: Simplify right side
    118,065.80x = 12,543,298,785.42
  5. Step 5: Solve for x
    x = 12,543,298,785.42/118,065.80
  6. Step 6: Final answer
    x = 106,239.90

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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.