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Finding the Fourth Proportional to 198,300.80, 296,932.80 and 127,798.40

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Solution

The fourth proportional to 198,300.80, 296,932.80 and 127,798.40 is: 191,363.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,300.80 : 296,932.80 = 127,798.40 : x
  2. Step 2: Convert to fraction form
    198,300.80/296,932.80 = 127,798.40/x
  3. Step 3: Cross multiply
    198,300.80x = 296,932.80 × 127,798.40
  4. Step 4: Simplify right side
    198,300.80x = 37,947,536,747.52
  5. Step 5: Solve for x
    x = 37,947,536,747.52/198,300.80
  6. Step 6: Final answer
    x = 191,363.51

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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.