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Finding the Fourth Proportional to 170,841.66, 256,293.48 and 85,497.06

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Solution

The fourth proportional to 170,841.66, 256,293.48 and 85,497.06 is: 128,261.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,841.66 : 256,293.48 = 85,497.06 : x
  2. Step 2: Convert to fraction form
    170,841.66/256,293.48 = 85,497.06/x
  3. Step 3: Cross multiply
    170,841.66x = 256,293.48 × 85,497.06
  4. Step 4: Simplify right side
    170,841.66x = 21,912,339,037.17
  5. Step 5: Solve for x
    x = 21,912,339,037.17/170,841.66
  6. Step 6: Final answer
    x = 128,261.10

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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.