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Finding the Fourth Proportional to 7,790.81, 10,751.94 and 4,434.65

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Solution

The fourth proportional to 7,790.81, 10,751.94 and 4,434.65 is: 6,120.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.81 : 10,751.94 = 4,434.65 : x
  2. Step 2: Convert to fraction form
    7,790.81/10,751.94 = 4,434.65/x
  3. Step 3: Cross multiply
    7,790.81x = 10,751.94 × 4,434.65
  4. Step 4: Simplify right side
    7,790.81x = 47,681,090.72
  5. Step 5: Solve for x
    x = 47,681,090.72/7,790.81
  6. Step 6: Final answer
    x = 6,120.17

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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.