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Finding the Fourth Proportional to 459,236.71, 688,868.03 and 126,812.71

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Solution

The fourth proportional to 459,236.71, 688,868.03 and 126,812.71 is: 190,222.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,236.71 : 688,868.03 = 126,812.71 : x
  2. Step 2: Convert to fraction form
    459,236.71/688,868.03 = 126,812.71/x
  3. Step 3: Cross multiply
    459,236.71x = 688,868.03 × 126,812.71
  4. Step 4: Simplify right side
    459,236.71x = 87,357,221,716.66
  5. Step 5: Solve for x
    x = 87,357,221,716.66/459,236.71
  6. Step 6: Final answer
    x = 190,222.65

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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.