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Finding the Fourth Proportional to 207,920.70, 311,881.05 and 194,798.70

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Solution

The fourth proportional to 207,920.70, 311,881.05 and 194,798.70 is: 292,198.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,920.70 : 311,881.05 = 194,798.70 : x
  2. Step 2: Convert to fraction form
    207,920.70/311,881.05 = 194,798.70/x
  3. Step 3: Cross multiply
    207,920.70x = 311,881.05 × 194,798.70
  4. Step 4: Simplify right side
    207,920.70x = 60,754,023,094.64
  5. Step 5: Solve for x
    x = 60,754,023,094.64/207,920.70
  6. Step 6: Final answer
    x = 292,198.05

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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.