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Finding the Fourth Proportional to 1,303,918.12, 1,799,517.53 and 723,328.31

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Solution

The fourth proportional to 1,303,918.12, 1,799,517.53 and 723,328.31 is: 998,254.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,303,918.12 : 1,799,517.53 = 723,328.31 : x
  2. Step 2: Convert to fraction form
    1,303,918.12/1,799,517.53 = 723,328.31/x
  3. Step 3: Cross multiply
    1,303,918.12x = 1,799,517.53 × 723,328.31
  4. Step 4: Simplify right side
    1,303,918.12x = 1,301,641,973,790.27
  5. Step 5: Solve for x
    x = 1,301,641,973,790.27/1,303,918.12
  6. Step 6: Final answer
    x = 998,254.38

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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.