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Finding the Fourth Proportional to 3,605,341.47, 4,978,743.75 and 2,318,417.79

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Solution

The fourth proportional to 3,605,341.47, 4,978,743.75 and 2,318,417.79 is: 3,201,585.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,605,341.47 : 4,978,743.75 = 2,318,417.79 : x
  2. Step 2: Convert to fraction form
    3,605,341.47/4,978,743.75 = 2,318,417.79/x
  3. Step 3: Cross multiply
    3,605,341.47x = 4,978,743.75 × 2,318,417.79
  4. Step 4: Simplify right side
    3,605,341.47x = 11,542,808,081,851.31
  5. Step 5: Solve for x
    x = 11,542,808,081,851.31/3,605,341.47
  6. Step 6: Final answer
    x = 3,201,585.25

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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.