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Finding the Fourth Proportional to 170,780.78, 256,183.47 and 65,599.76

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Solution

The fourth proportional to 170,780.78, 256,183.47 and 65,599.76 is: 98,404.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,780.78 : 256,183.47 = 65,599.76 : x
  2. Step 2: Convert to fraction form
    170,780.78/256,183.47 = 65,599.76/x
  3. Step 3: Cross multiply
    170,780.78x = 256,183.47 × 65,599.76
  4. Step 4: Simplify right side
    170,780.78x = 16,805,574,788.43
  5. Step 5: Solve for x
    x = 16,805,574,788.43/170,780.78
  6. Step 6: Final answer
    x = 98,404.37

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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.