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Finding the Fourth Proportional to 193,478.20, 290,087.70 and 93,686.20

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Solution

The fourth proportional to 193,478.20, 290,087.70 and 93,686.20 is: 140,466.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,478.20 : 290,087.70 = 93,686.20 : x
  2. Step 2: Convert to fraction form
    193,478.20/290,087.70 = 93,686.20/x
  3. Step 3: Cross multiply
    193,478.20x = 290,087.70 × 93,686.20
  4. Step 4: Simplify right side
    193,478.20x = 27,177,214,279.74
  5. Step 5: Solve for x
    x = 27,177,214,279.74/193,478.20
  6. Step 6: Final answer
    x = 140,466.54

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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.