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Finding the Fourth Proportional to 186,516.96, 257,085.96 and 131,998.80

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Solution

The fourth proportional to 186,516.96, 257,085.96 and 131,998.80 is: 181,940.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,516.96 : 257,085.96 = 131,998.80 : x
  2. Step 2: Convert to fraction form
    186,516.96/257,085.96 = 131,998.80/x
  3. Step 3: Cross multiply
    186,516.96x = 257,085.96 × 131,998.80
  4. Step 4: Simplify right side
    186,516.96x = 33,935,038,216.85
  5. Step 5: Solve for x
    x = 33,935,038,216.85/186,516.96
  6. Step 6: Final answer
    x = 181,940.76

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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.