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Finding the Fourth Proportional to 289,905.01, 399,950.80 and 194,442.46

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Solution

The fourth proportional to 289,905.01, 399,950.80 and 194,442.46 is: 268,251.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,905.01 : 399,950.80 = 194,442.46 : x
  2. Step 2: Convert to fraction form
    289,905.01/399,950.80 = 194,442.46/x
  3. Step 3: Cross multiply
    289,905.01x = 399,950.80 × 194,442.46
  4. Step 4: Simplify right side
    289,905.01x = 77,767,415,944.98
  5. Step 5: Solve for x
    x = 77,767,415,944.98/289,905.01
  6. Step 6: Final answer
    x = 268,251.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.