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Finding the Fourth Proportional to 355,578.43, 533,326.57 and 89,318.67

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Solution

The fourth proportional to 355,578.43, 533,326.57 and 89,318.67 is: 133,967.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,578.43 : 533,326.57 = 89,318.67 : x
  2. Step 2: Convert to fraction form
    355,578.43/533,326.57 = 89,318.67/x
  3. Step 3: Cross multiply
    355,578.43x = 533,326.57 × 89,318.67
  4. Step 4: Simplify right side
    355,578.43x = 47,636,019,908.06
  5. Step 5: Solve for x
    x = 47,636,019,908.06/355,578.43
  6. Step 6: Final answer
    x = 133,967.69

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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.