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Finding the Fourth Proportional to 18,140.52, 25,030.71 and 11,069.22

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Solution

The fourth proportional to 18,140.52, 25,030.71 and 11,069.22 is: 15,273.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,140.52 : 25,030.71 = 11,069.22 : x
  2. Step 2: Convert to fraction form
    18,140.52/25,030.71 = 11,069.22/x
  3. Step 3: Cross multiply
    18,140.52x = 25,030.71 × 11,069.22
  4. Step 4: Simplify right side
    18,140.52x = 277,070,435.75
  5. Step 5: Solve for x
    x = 277,070,435.75/18,140.52
  6. Step 6: Final answer
    x = 15,273.57

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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.