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Finding the Fourth Proportional to 247,071.70, 340,995.51 and 156,436.09

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Solution

The fourth proportional to 247,071.70, 340,995.51 and 156,436.09 is: 215,904.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,071.70 : 340,995.51 = 156,436.09 : x
  2. Step 2: Convert to fraction form
    247,071.70/340,995.51 = 156,436.09/x
  3. Step 3: Cross multiply
    247,071.70x = 340,995.51 × 156,436.09
  4. Step 4: Simplify right side
    247,071.70x = 53,344,004,291.96
  5. Step 5: Solve for x
    x = 53,344,004,291.96/247,071.70
  6. Step 6: Final answer
    x = 215,904.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.