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Finding the Fourth Proportional to 317,600.54, 438,259.61 and 188,516.97

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Solution

The fourth proportional to 317,600.54, 438,259.61 and 188,516.97 is: 260,136.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,600.54 : 438,259.61 = 188,516.97 : x
  2. Step 2: Convert to fraction form
    317,600.54/438,259.61 = 188,516.97/x
  3. Step 3: Cross multiply
    317,600.54x = 438,259.61 × 188,516.97
  4. Step 4: Simplify right side
    317,600.54x = 82,619,374,221.87
  5. Step 5: Solve for x
    x = 82,619,374,221.87/317,600.54
  6. Step 6: Final answer
    x = 260,136.12

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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.