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Finding the Fourth Proportional to 5,057,195.52, 6,978,356.64 and 2,992,274.40

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Solution

The fourth proportional to 5,057,195.52, 6,978,356.64 and 2,992,274.40 is: 4,128,999.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,057,195.52 : 6,978,356.64 = 2,992,274.40 : x
  2. Step 2: Convert to fraction form
    5,057,195.52/6,978,356.64 = 2,992,274.40/x
  3. Step 3: Cross multiply
    5,057,195.52x = 6,978,356.64 × 2,992,274.40
  4. Step 4: Simplify right side
    5,057,195.52x = 20,881,157,927,942.02
  5. Step 5: Solve for x
    x = 20,881,157,927,942.02/5,057,195.52
  6. Step 6: Final answer
    x = 4,128,999.53

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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.