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Finding the Fourth Proportional to 186,279.82, 257,059 and 105,702.54

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Solution

The fourth proportional to 186,279.82, 257,059 and 105,702.54 is: 145,865.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,279.82 : 257,059 = 105,702.54 : x
  2. Step 2: Convert to fraction form
    186,279.82/257,059 = 105,702.54/x
  3. Step 3: Cross multiply
    186,279.82x = 257,059 × 105,702.54
  4. Step 4: Simplify right side
    186,279.82x = 27,171,789,229.86
  5. Step 5: Solve for x
    x = 27,171,789,229.86/186,279.82
  6. Step 6: Final answer
    x = 145,865.45

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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.