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Finding the Fourth Proportional to 193,562.80, 289,955.40 and 134,465.20

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Solution

The fourth proportional to 193,562.80, 289,955.40 and 134,465.20 is: 201,427.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,562.80 : 289,955.40 = 134,465.20 : x
  2. Step 2: Convert to fraction form
    193,562.80/289,955.40 = 134,465.20/x
  3. Step 3: Cross multiply
    193,562.80x = 289,955.40 × 134,465.20
  4. Step 4: Simplify right side
    193,562.80x = 38,988,910,852.08
  5. Step 5: Solve for x
    x = 38,988,910,852.08/193,562.80
  6. Step 6: Final answer
    x = 201,427.71

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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.