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Finding the Fourth Proportional to 7,221.51, 10,831.51 and 4,896.45

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Solution

The fourth proportional to 7,221.51, 10,831.51 and 4,896.45 is: 7,344.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.51 : 10,831.51 = 4,896.45 : x
  2. Step 2: Convert to fraction form
    7,221.51/10,831.51 = 4,896.45/x
  3. Step 3: Cross multiply
    7,221.51x = 10,831.51 × 4,896.45
  4. Step 4: Simplify right side
    7,221.51x = 53,035,947.14
  5. Step 5: Solve for x
    x = 53,035,947.14/7,221.51
  6. Step 6: Final answer
    x = 7,344.16

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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.