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Finding the Fourth Proportional to 136,998.30, 191,382.90 and 136,998.30

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Solution

The fourth proportional to 136,998.30, 191,382.90 and 136,998.30 is: 191,382.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,998.30 : 191,382.90 = 136,998.30 : x
  2. Step 2: Convert to fraction form
    136,998.30/191,382.90 = 136,998.30/x
  3. Step 3: Cross multiply
    136,998.30x = 191,382.90 × 136,998.30
  4. Step 4: Simplify right side
    136,998.30x = 26,219,131,949.07
  5. Step 5: Solve for x
    x = 26,219,131,949.07/136,998.30
  6. Step 6: Final answer
    x = 191,382.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.