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Finding the Fourth Proportional to 2,346.07, 3,516.43 and 785.70

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Solution

The fourth proportional to 2,346.07, 3,516.43 and 785.70 is: 1,177.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,346.07 : 3,516.43 = 785.70 : x
  2. Step 2: Convert to fraction form
    2,346.07/3,516.43 = 785.70/x
  3. Step 3: Cross multiply
    2,346.07x = 3,516.43 × 785.70
  4. Step 4: Simplify right side
    2,346.07x = 2,762,859.05
  5. Step 5: Solve for x
    x = 2,762,859.05/2,346.07
  6. Step 6: Final answer
    x = 1,177.65

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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.