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Finding the Fourth Proportional to 136,628.10, 204,942.15 and 99,011.70

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Solution

The fourth proportional to 136,628.10, 204,942.15 and 99,011.70 is: 148,517.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,628.10 : 204,942.15 = 99,011.70 : x
  2. Step 2: Convert to fraction form
    136,628.10/204,942.15 = 99,011.70/x
  3. Step 3: Cross multiply
    136,628.10x = 204,942.15 × 99,011.70
  4. Step 4: Simplify right side
    136,628.10x = 20,291,670,673.16
  5. Step 5: Solve for x
    x = 20,291,670,673.16/136,628.10
  6. Step 6: Final answer
    x = 148,517.55

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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.