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Finding the Fourth Proportional to 217,220.72, 325,558.92 and 117,376.88

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Solution

The fourth proportional to 217,220.72, 325,558.92 and 117,376.88 is: 175,918.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,220.72 : 325,558.92 = 117,376.88 : x
  2. Step 2: Convert to fraction form
    217,220.72/325,558.92 = 117,376.88/x
  3. Step 3: Cross multiply
    217,220.72x = 325,558.92 × 117,376.88
  4. Step 4: Simplify right side
    217,220.72x = 38,213,090,285.77
  5. Step 5: Solve for x
    x = 38,213,090,285.77/217,220.72
  6. Step 6: Final answer
    x = 175,918.26

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1.5x scale

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.