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Finding the Fourth Proportional to 113,465.40, 170,198.10 and 51,257.40

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Solution

The fourth proportional to 113,465.40, 170,198.10 and 51,257.40 is: 76,886.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,465.40 : 170,198.10 = 51,257.40 : x
  2. Step 2: Convert to fraction form
    113,465.40/170,198.10 = 51,257.40/x
  3. Step 3: Cross multiply
    113,465.40x = 170,198.10 × 51,257.40
  4. Step 4: Simplify right side
    113,465.40x = 8,723,912,090.94
  5. Step 5: Solve for x
    x = 8,723,912,090.94/113,465.40
  6. Step 6: Final answer
    x = 76,886.10

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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.