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Finding the Fourth Proportional to 1,295,504.31, 1,787,798.35 and 722,581.39

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Solution

The fourth proportional to 1,295,504.31, 1,787,798.35 and 722,581.39 is: 997,163.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,504.31 : 1,787,798.35 = 722,581.39 : x
  2. Step 2: Convert to fraction form
    1,295,504.31/1,787,798.35 = 722,581.39/x
  3. Step 3: Cross multiply
    1,295,504.31x = 1,787,798.35 × 722,581.39
  4. Step 4: Simplify right side
    1,295,504.31x = 1,291,829,819,920.68
  5. Step 5: Solve for x
    x = 1,291,829,819,920.68/1,295,504.31
  6. Step 6: Final answer
    x = 997,163.66

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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.