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Finding the Fourth Proportional to 186,912.86, 278,938.91 and 166,967.42

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Solution

The fourth proportional to 186,912.86, 278,938.91 and 166,967.42 is: 249,173.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,912.86 : 278,938.91 = 166,967.42 : x
  2. Step 2: Convert to fraction form
    186,912.86/278,938.91 = 166,967.42/x
  3. Step 3: Cross multiply
    186,912.86x = 278,938.91 × 166,967.42
  4. Step 4: Simplify right side
    186,912.86x = 46,573,707,910.78
  5. Step 5: Solve for x
    x = 46,573,707,910.78/186,912.86
  6. Step 6: Final answer
    x = 249,173.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.