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Finding the Fourth Proportional to 386,804.44, 577,559.48 and 346,563.64

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Solution

The fourth proportional to 386,804.44, 577,559.48 and 346,563.64 is: 517,473.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,804.44 : 577,559.48 = 346,563.64 : x
  2. Step 2: Convert to fraction form
    386,804.44/577,559.48 = 346,563.64/x
  3. Step 3: Cross multiply
    386,804.44x = 577,559.48 × 346,563.64
  4. Step 4: Simplify right side
    386,804.44x = 200,161,115,705.31
  5. Step 5: Solve for x
    x = 200,161,115,705.31/386,804.44
  6. Step 6: Final answer
    x = 517,473.68

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.