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Finding the Fourth Proportional to 177,999.20, 245,216.40 and 124,186.40

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Solution

The fourth proportional to 177,999.20, 245,216.40 and 124,186.40 is: 171,082.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,999.20 : 245,216.40 = 124,186.40 : x
  2. Step 2: Convert to fraction form
    177,999.20/245,216.40 = 124,186.40/x
  3. Step 3: Cross multiply
    177,999.20x = 245,216.40 × 124,186.40
  4. Step 4: Simplify right side
    177,999.20x = 30,452,541,936.96
  5. Step 5: Solve for x
    x = 30,452,541,936.96/177,999.20
  6. Step 6: Final answer
    x = 171,082.47

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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.