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Finding the Fourth Proportional to 73,108.32, 100,889.52 and 39,574.32

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Solution

The fourth proportional to 73,108.32, 100,889.52 and 39,574.32 is: 54,612.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,108.32 : 100,889.52 = 39,574.32 : x
  2. Step 2: Convert to fraction form
    73,108.32/100,889.52 = 39,574.32/x
  3. Step 3: Cross multiply
    73,108.32x = 100,889.52 × 39,574.32
  4. Step 4: Simplify right side
    73,108.32x = 3,992,634,149.13
  5. Step 5: Solve for x
    x = 3,992,634,149.13/73,108.32
  6. Step 6: Final answer
    x = 54,612.58

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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.