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Finding the Fourth Proportional to 13,242.33, 18,274.71 and 7,274.01

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Solution

The fourth proportional to 13,242.33, 18,274.71 and 7,274.01 is: 10,038.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,242.33 : 18,274.71 = 7,274.01 : x
  2. Step 2: Convert to fraction form
    13,242.33/18,274.71 = 7,274.01/x
  3. Step 3: Cross multiply
    13,242.33x = 18,274.71 × 7,274.01
  4. Step 4: Simplify right side
    13,242.33x = 132,930,423.29
  5. Step 5: Solve for x
    x = 132,930,423.29/13,242.33
  6. Step 6: Final answer
    x = 10,038.30

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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.