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Finding the Fourth Proportional to 16,975.20, 23,425.68 and 9,421.32

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Solution

The fourth proportional to 16,975.20, 23,425.68 and 9,421.32 is: 13,001.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,975.20 : 23,425.68 = 9,421.32 : x
  2. Step 2: Convert to fraction form
    16,975.20/23,425.68 = 9,421.32/x
  3. Step 3: Cross multiply
    16,975.20x = 23,425.68 × 9,421.32
  4. Step 4: Simplify right side
    16,975.20x = 220,700,827.50
  5. Step 5: Solve for x
    x = 220,700,827.50/16,975.20
  6. Step 6: Final answer
    x = 13,001.37

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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.