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Finding the Fourth Proportional to 7,328.22, 10,112.93 and 3,971.12

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Solution

The fourth proportional to 7,328.22, 10,112.93 and 3,971.12 is: 5,480.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,328.22 : 10,112.93 = 3,971.12 : x
  2. Step 2: Convert to fraction form
    7,328.22/10,112.93 = 3,971.12/x
  3. Step 3: Cross multiply
    7,328.22x = 10,112.93 × 3,971.12
  4. Step 4: Simplify right side
    7,328.22x = 40,159,664.01
  5. Step 5: Solve for x
    x = 40,159,664.01/7,328.22
  6. Step 6: Final answer
    x = 5,480.14

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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.