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Finding the Fourth Proportional to 194,713.20, 291,421.80 and 141,253.20

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Solution

The fourth proportional to 194,713.20, 291,421.80 and 141,253.20 is: 211,409.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,713.20 : 291,421.80 = 141,253.20 : x
  2. Step 2: Convert to fraction form
    194,713.20/291,421.80 = 141,253.20/x
  3. Step 3: Cross multiply
    194,713.20x = 291,421.80 × 141,253.20
  4. Step 4: Simplify right side
    194,713.20x = 41,164,261,799.76
  5. Step 5: Solve for x
    x = 41,164,261,799.76/194,713.20
  6. Step 6: Final answer
    x = 211,409.71

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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.