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Finding the Fourth Proportional to 7,472.99, 10,313.20 and 4,115.81

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Solution

The fourth proportional to 7,472.99, 10,313.20 and 4,115.81 is: 5,680.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,472.99 : 10,313.20 = 4,115.81 : x
  2. Step 2: Convert to fraction form
    7,472.99/10,313.20 = 4,115.81/x
  3. Step 3: Cross multiply
    7,472.99x = 10,313.20 × 4,115.81
  4. Step 4: Simplify right side
    7,472.99x = 42,447,106.22
  5. Step 5: Solve for x
    x = 42,447,106.22/7,472.99
  6. Step 6: Final answer
    x = 5,680.07

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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.