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Finding the Fourth Proportional to 719,033, 992,265.54 and 401,081

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Solution

The fourth proportional to 719,033, 992,265.54 and 401,081 is: 553,491.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,033 : 992,265.54 = 401,081 : x
  2. Step 2: Convert to fraction form
    719,033/992,265.54 = 401,081/x
  3. Step 3: Cross multiply
    719,033x = 992,265.54 × 401,081
  4. Step 4: Simplify right side
    719,033x = 397,978,855,048.74
  5. Step 5: Solve for x
    x = 397,978,855,048.74/719,033
  6. Step 6: Final answer
    x = 553,491.78

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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.