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Finding the Fourth Proportional to 186,725, 257,895.46 and 135,964.68

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Solution

The fourth proportional to 186,725, 257,895.46 and 135,964.68 is: 187,787.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,725 : 257,895.46 = 135,964.68 : x
  2. Step 2: Convert to fraction form
    186,725/257,895.46 = 135,964.68/x
  3. Step 3: Cross multiply
    186,725x = 257,895.46 × 135,964.68
  4. Step 4: Simplify right side
    186,725x = 35,064,673,692.35
  5. Step 5: Solve for x
    x = 35,064,673,692.35/186,725
  6. Step 6: Final answer
    x = 187,787.78

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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.