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Finding the Fourth Proportional to 171,362.80, 256,912.40 and 87,053.68

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Solution

The fourth proportional to 171,362.80, 256,912.40 and 87,053.68 is: 130,513.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,362.80 : 256,912.40 = 87,053.68 : x
  2. Step 2: Convert to fraction form
    171,362.80/256,912.40 = 87,053.68/x
  3. Step 3: Cross multiply
    171,362.80x = 256,912.40 × 87,053.68
  4. Step 4: Simplify right side
    171,362.80x = 22,365,169,857.63
  5. Step 5: Solve for x
    x = 22,365,169,857.63/171,362.80
  6. Step 6: Final answer
    x = 130,513.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.