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Finding the Fourth Proportional to 197,911.20, 296,866.80 and 177,866.40

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Solution

The fourth proportional to 197,911.20, 296,866.80 and 177,866.40 is: 266,799.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,911.20 : 296,866.80 = 177,866.40 : x
  2. Step 2: Convert to fraction form
    197,911.20/296,866.80 = 177,866.40/x
  3. Step 3: Cross multiply
    197,911.20x = 296,866.80 × 177,866.40
  4. Step 4: Simplify right side
    197,911.20x = 52,802,628,995.52
  5. Step 5: Solve for x
    x = 52,802,628,995.52/197,911.20
  6. Step 6: Final answer
    x = 266,799.60

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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.