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Finding the Fourth Proportional to 186,342.60, 256,662.90 and 143,239.56

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Solution

The fourth proportional to 186,342.60, 256,662.90 and 143,239.56 is: 197,294.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,342.60 : 256,662.90 = 143,239.56 : x
  2. Step 2: Convert to fraction form
    186,342.60/256,662.90 = 143,239.56/x
  3. Step 3: Cross multiply
    186,342.60x = 256,662.90 × 143,239.56
  4. Step 4: Simplify right side
    186,342.60x = 36,764,280,864.32
  5. Step 5: Solve for x
    x = 36,764,280,864.32/186,342.60
  6. Step 6: Final answer
    x = 197,294.02

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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.