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Finding the Fourth Proportional to 217,391.60, 299,653.70 and 171,376.22

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Solution

The fourth proportional to 217,391.60, 299,653.70 and 171,376.22 is: 236,225.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,391.60 : 299,653.70 = 171,376.22 : x
  2. Step 2: Convert to fraction form
    217,391.60/299,653.70 = 171,376.22/x
  3. Step 3: Cross multiply
    217,391.60x = 299,653.70 × 171,376.22
  4. Step 4: Simplify right side
    217,391.60x = 51,353,518,415.01
  5. Step 5: Solve for x
    x = 51,353,518,415.01/217,391.60
  6. Step 6: Final answer
    x = 236,225.86

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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.