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Finding the Fourth Proportional to 31,064.44, 42,868.74 and 16,917.16

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Solution

The fourth proportional to 31,064.44, 42,868.74 and 16,917.16 is: 23,345.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,064.44 : 42,868.74 = 16,917.16 : x
  2. Step 2: Convert to fraction form
    31,064.44/42,868.74 = 16,917.16/x
  3. Step 3: Cross multiply
    31,064.44x = 42,868.74 × 16,917.16
  4. Step 4: Simplify right side
    31,064.44x = 725,217,333.58
  5. Step 5: Solve for x
    x = 725,217,333.58/31,064.44
  6. Step 6: Final answer
    x = 23,345.58

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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.