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Finding the Fourth Proportional to 186,173.80, 256,912.24 and 101,290.96

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Solution

The fourth proportional to 186,173.80, 256,912.24 and 101,290.96 is: 139,777.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,173.80 : 256,912.24 = 101,290.96 : x
  2. Step 2: Convert to fraction form
    186,173.80/256,912.24 = 101,290.96/x
  3. Step 3: Cross multiply
    186,173.80x = 256,912.24 × 101,290.96
  4. Step 4: Simplify right side
    186,173.80x = 26,022,887,425.35
  5. Step 5: Solve for x
    x = 26,022,887,425.35/186,173.80
  6. Step 6: Final answer
    x = 139,777.39

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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.