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Finding the Fourth Proportional to 186,362.73, 257,113.03 and 105,743.56

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Solution

The fourth proportional to 186,362.73, 257,113.03 and 105,743.56 is: 145,887.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,362.73 : 257,113.03 = 105,743.56 : x
  2. Step 2: Convert to fraction form
    186,362.73/257,113.03 = 105,743.56/x
  3. Step 3: Cross multiply
    186,362.73x = 257,113.03 × 105,743.56
  4. Step 4: Simplify right side
    186,362.73x = 27,188,047,114.59
  5. Step 5: Solve for x
    x = 27,188,047,114.59/186,362.73
  6. Step 6: Final answer
    x = 145,887.79

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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.