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Finding the Fourth Proportional to 202,457.76, 279,384.17 and 111,811.78

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Solution

The fourth proportional to 202,457.76, 279,384.17 and 111,811.78 is: 154,296.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,457.76 : 279,384.17 = 111,811.78 : x
  2. Step 2: Convert to fraction form
    202,457.76/279,384.17 = 111,811.78/x
  3. Step 3: Cross multiply
    202,457.76x = 279,384.17 × 111,811.78
  4. Step 4: Simplify right side
    202,457.76x = 31,238,441,351.52
  5. Step 5: Solve for x
    x = 31,238,441,351.52/202,457.76
  6. Step 6: Final answer
    x = 154,296.09

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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.