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Finding the Fourth Proportional to 2,323.69, 3,485.53 and 784.69

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Solution

The fourth proportional to 2,323.69, 3,485.53 and 784.69 is: 1,177.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,323.69 : 3,485.53 = 784.69 : x
  2. Step 2: Convert to fraction form
    2,323.69/3,485.53 = 784.69/x
  3. Step 3: Cross multiply
    2,323.69x = 3,485.53 × 784.69
  4. Step 4: Simplify right side
    2,323.69x = 2,735,052.80
  5. Step 5: Solve for x
    x = 2,735,052.80/2,323.69
  6. Step 6: Final answer
    x = 1,177.03

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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.