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Finding the Fourth Proportional to 217,415.70, 326,123.55 and 92,999.70

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Solution

The fourth proportional to 217,415.70, 326,123.55 and 92,999.70 is: 139,499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,415.70 : 326,123.55 = 92,999.70 : x
  2. Step 2: Convert to fraction form
    217,415.70/326,123.55 = 92,999.70/x
  3. Step 3: Cross multiply
    217,415.70x = 326,123.55 × 92,999.70
  4. Step 4: Simplify right side
    217,415.70x = 30,329,392,312.94
  5. Step 5: Solve for x
    x = 30,329,392,312.94/217,415.70
  6. Step 6: Final answer
    x = 139,499.55

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Similar ratio
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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.