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Finding the Fourth Proportional to 253,948.70, 350,453.15 and 139,237.82

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Solution

The fourth proportional to 253,948.70, 350,453.15 and 139,237.82 is: 192,150.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,948.70 : 350,453.15 = 139,237.82 : x
  2. Step 2: Convert to fraction form
    253,948.70/350,453.15 = 139,237.82/x
  3. Step 3: Cross multiply
    253,948.70x = 350,453.15 × 139,237.82
  4. Step 4: Simplify right side
    253,948.70x = 48,796,330,169.68
  5. Step 5: Solve for x
    x = 48,796,330,169.68/253,948.70
  6. Step 6: Final answer
    x = 192,150.35

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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.