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Finding the Fourth Proportional to 7,314,629.60, 10,978,165.20 and 3,277,330.40

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Solution

The fourth proportional to 7,314,629.60, 10,978,165.20 and 3,277,330.40 is: 4,918,782.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,314,629.60 : 10,978,165.20 = 3,277,330.40 : x
  2. Step 2: Convert to fraction form
    7,314,629.60/10,978,165.20 = 3,277,330.40/x
  3. Step 3: Cross multiply
    7,314,629.60x = 10,978,165.20 × 3,277,330.40
  4. Step 4: Simplify right side
    7,314,629.60x = 35,979,074,546,182.08
  5. Step 5: Solve for x
    x = 35,979,074,546,182.08/7,314,629.60
  6. Step 6: Final answer
    x = 4,918,782.84

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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.