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Finding the Fourth Proportional to 313,113.67, 469,628.48 and 88,491.69

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Solution

The fourth proportional to 313,113.67, 469,628.48 and 88,491.69 is: 132,725.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,113.67 : 469,628.48 = 88,491.69 : x
  2. Step 2: Convert to fraction form
    313,113.67/469,628.48 = 88,491.69/x
  3. Step 3: Cross multiply
    313,113.67x = 469,628.48 × 88,491.69
  4. Step 4: Simplify right side
    313,113.67x = 41,558,218,088.56
  5. Step 5: Solve for x
    x = 41,558,218,088.56/313,113.67
  6. Step 6: Final answer
    x = 132,725.66

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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.