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Finding the Fourth Proportional to 217,543.55, 300,515.96 and 167,880.83

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Solution

The fourth proportional to 217,543.55, 300,515.96 and 167,880.83 is: 231,911.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,543.55 : 300,515.96 = 167,880.83 : x
  2. Step 2: Convert to fraction form
    217,543.55/300,515.96 = 167,880.83/x
  3. Step 3: Cross multiply
    217,543.55x = 300,515.96 × 167,880.83
  4. Step 4: Simplify right side
    217,543.55x = 50,450,867,953.64
  5. Step 5: Solve for x
    x = 50,450,867,953.64/217,543.55
  6. Step 6: Final answer
    x = 231,911.58

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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.