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Finding the Fourth Proportional to 15,047.61, 20,756.58 and 9,668.22

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Solution

The fourth proportional to 15,047.61, 20,756.58 and 9,668.22 is: 13,336.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,047.61 : 20,756.58 = 9,668.22 : x
  2. Step 2: Convert to fraction form
    15,047.61/20,756.58 = 9,668.22/x
  3. Step 3: Cross multiply
    15,047.61x = 20,756.58 × 9,668.22
  4. Step 4: Simplify right side
    15,047.61x = 200,679,181.89
  5. Step 5: Solve for x
    x = 200,679,181.89/15,047.61
  6. Step 6: Final answer
    x = 13,336.28

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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.