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Finding the Fourth Proportional to 57,112.12, 85,668.06 and 15,559

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Solution

The fourth proportional to 57,112.12, 85,668.06 and 15,559 is: 23,338.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,112.12 : 85,668.06 = 15,559 : x
  2. Step 2: Convert to fraction form
    57,112.12/85,668.06 = 15,559/x
  3. Step 3: Cross multiply
    57,112.12x = 85,668.06 × 15,559
  4. Step 4: Simplify right side
    57,112.12x = 1,332,909,345.54
  5. Step 5: Solve for x
    x = 1,332,909,345.54/57,112.12
  6. Step 6: Final answer
    x = 23,338.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.