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Finding the Fourth Proportional to 79,465.32, 109,662.39 and 43,657.65

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Solution

The fourth proportional to 79,465.32, 109,662.39 and 43,657.65 is: 60,247.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,465.32 : 109,662.39 = 43,657.65 : x
  2. Step 2: Convert to fraction form
    79,465.32/109,662.39 = 43,657.65/x
  3. Step 3: Cross multiply
    79,465.32x = 109,662.39 × 43,657.65
  4. Step 4: Simplify right side
    79,465.32x = 4,787,602,240.78
  5. Step 5: Solve for x
    x = 4,787,602,240.78/79,465.32
  6. Step 6: Final answer
    x = 60,247.69

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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.