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Finding the Fourth Proportional to 202,451.30, 279,384.90 and 111,809.57

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Solution

The fourth proportional to 202,451.30, 279,384.90 and 111,809.57 is: 154,298.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,451.30 : 279,384.90 = 111,809.57 : x
  2. Step 2: Convert to fraction form
    202,451.30/279,384.90 = 111,809.57/x
  3. Step 3: Cross multiply
    202,451.30x = 279,384.90 × 111,809.57
  4. Step 4: Simplify right side
    202,451.30x = 31,237,903,717.28
  5. Step 5: Solve for x
    x = 31,237,903,717.28/202,451.30
  6. Step 6: Final answer
    x = 154,298.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.