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Finding the Fourth Proportional to 31,033.76, 42,827.04 and 16,886.60

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Solution

The fourth proportional to 31,033.76, 42,827.04 and 16,886.60 is: 23,303.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,033.76 : 42,827.04 = 16,886.60 : x
  2. Step 2: Convert to fraction form
    31,033.76/42,827.04 = 16,886.60/x
  3. Step 3: Cross multiply
    31,033.76x = 42,827.04 × 16,886.60
  4. Step 4: Simplify right side
    31,033.76x = 723,203,093.66
  5. Step 5: Solve for x
    x = 723,203,093.66/31,033.76
  6. Step 6: Final answer
    x = 23,303.75

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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.