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Finding the Fourth Proportional to 7,482.87, 10,324.20 and 4,831.80

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Solution

The fourth proportional to 7,482.87, 10,324.20 and 4,831.80 is: 6,666.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,482.87 : 10,324.20 = 4,831.80 : x
  2. Step 2: Convert to fraction form
    7,482.87/10,324.20 = 4,831.80/x
  3. Step 3: Cross multiply
    7,482.87x = 10,324.20 × 4,831.80
  4. Step 4: Simplify right side
    7,482.87x = 49,884,469.56
  5. Step 5: Solve for x
    x = 49,884,469.56/7,482.87
  6. Step 6: Final answer
    x = 6,666.49

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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.