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Finding the Fourth Proportional to 16,455.60, 22,708.62 and 8,901.90

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Solution

The fourth proportional to 16,455.60, 22,708.62 and 8,901.90 is: 12,284.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,455.60 : 22,708.62 = 8,901.90 : x
  2. Step 2: Convert to fraction form
    16,455.60/22,708.62 = 8,901.90/x
  3. Step 3: Cross multiply
    16,455.60x = 22,708.62 × 8,901.90
  4. Step 4: Simplify right side
    16,455.60x = 202,149,779.22
  5. Step 5: Solve for x
    x = 202,149,779.22/16,455.60
  6. Step 6: Final answer
    x = 12,284.56

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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.