Home / 189,639.27-284,571.13-69,780.39

Finding the Fourth Proportional to 189,639.27, 284,571.13 and 69,780.39

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Solution

The fourth proportional to 189,639.27, 284,571.13 and 69,780.39 is: 104,711.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,639.27 : 284,571.13 = 69,780.39 : x
  2. Step 2: Convert to fraction form
    189,639.27/284,571.13 = 69,780.39/x
  3. Step 3: Cross multiply
    189,639.27x = 284,571.13 × 69,780.39
  4. Step 4: Simplify right side
    189,639.27x = 19,857,482,662.38
  5. Step 5: Solve for x
    x = 19,857,482,662.38/189,639.27
  6. Step 6: Final answer
    x = 104,711.87

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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.