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Finding the Fourth Proportional to 189,995.36, 284,805.10 and 89,979.80

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Solution

The fourth proportional to 189,995.36, 284,805.10 and 89,979.80 is: 134,880.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,995.36 : 284,805.10 = 89,979.80 : x
  2. Step 2: Convert to fraction form
    189,995.36/284,805.10 = 89,979.80/x
  3. Step 3: Cross multiply
    189,995.36x = 284,805.10 × 89,979.80
  4. Step 4: Simplify right side
    189,995.36x = 25,626,705,936.98
  5. Step 5: Solve for x
    x = 25,626,705,936.98/189,995.36
  6. Step 6: Final answer
    x = 134,880.69

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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.