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Finding the Fourth Proportional to 780,168.60, 1,093,710.60 and 780,168.60

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Solution

The fourth proportional to 780,168.60, 1,093,710.60 and 780,168.60 is: 1,093,710.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,168.60 : 1,093,710.60 = 780,168.60 : x
  2. Step 2: Convert to fraction form
    780,168.60/1,093,710.60 = 780,168.60/x
  3. Step 3: Cross multiply
    780,168.60x = 1,093,710.60 × 780,168.60
  4. Step 4: Simplify right side
    780,168.60x = 853,278,667,607.16
  5. Step 5: Solve for x
    x = 853,278,667,607.16/780,168.60
  6. Step 6: Final answer
    x = 1,093,710.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.