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Finding the Fourth Proportional to 13,059.90, 18,022.61 and 7,091.52

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Solution

The fourth proportional to 13,059.90, 18,022.61 and 7,091.52 is: 9,786.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,059.90 : 18,022.61 = 7,091.52 : x
  2. Step 2: Convert to fraction form
    13,059.90/18,022.61 = 7,091.52/x
  3. Step 3: Cross multiply
    13,059.90x = 18,022.61 × 7,091.52
  4. Step 4: Simplify right side
    13,059.90x = 127,807,663.81
  5. Step 5: Solve for x
    x = 127,807,663.81/13,059.90
  6. Step 6: Final answer
    x = 9,786.27

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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.