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Finding the Fourth Proportional to 7,507.79, 10,360.74 and 4,195.79

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Solution

The fourth proportional to 7,507.79, 10,360.74 and 4,195.79 is: 5,790.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,507.79 : 10,360.74 = 4,195.79 : x
  2. Step 2: Convert to fraction form
    7,507.79/10,360.74 = 4,195.79/x
  3. Step 3: Cross multiply
    7,507.79x = 10,360.74 × 4,195.79
  4. Step 4: Simplify right side
    7,507.79x = 43,471,416.50
  5. Step 5: Solve for x
    x = 43,471,416.50/7,507.79
  6. Step 6: Final answer
    x = 5,790.18

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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.