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Finding the Fourth Proportional to 84,857.60, 127,286.40 and 82,913.60

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Solution

The fourth proportional to 84,857.60, 127,286.40 and 82,913.60 is: 124,370.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,857.60 : 127,286.40 = 82,913.60 : x
  2. Step 2: Convert to fraction form
    84,857.60/127,286.40 = 82,913.60/x
  3. Step 3: Cross multiply
    84,857.60x = 127,286.40 × 82,913.60
  4. Step 4: Simplify right side
    84,857.60x = 10,553,773,655.04
  5. Step 5: Solve for x
    x = 10,553,773,655.04/84,857.60
  6. Step 6: Final answer
    x = 124,370.40

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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.