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Finding the Fourth Proportional to 83,338.72, 115,004.64 and 47,540.32

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Solution

The fourth proportional to 83,338.72, 115,004.64 and 47,540.32 is: 65,604.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,338.72 : 115,004.64 = 47,540.32 : x
  2. Step 2: Convert to fraction form
    83,338.72/115,004.64 = 47,540.32/x
  3. Step 3: Cross multiply
    83,338.72x = 115,004.64 × 47,540.32
  4. Step 4: Simplify right side
    83,338.72x = 5,467,357,387.08
  5. Step 5: Solve for x
    x = 5,467,357,387.08/83,338.72
  6. Step 6: Final answer
    x = 65,604.05

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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.