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Finding the Fourth Proportional to 1,317,046.02, 1,972,344.66 and 1,087,939.98

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Solution

The fourth proportional to 1,317,046.02, 1,972,344.66 and 1,087,939.98 is: 1,629,246.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,046.02 : 1,972,344.66 = 1,087,939.98 : x
  2. Step 2: Convert to fraction form
    1,317,046.02/1,972,344.66 = 1,087,939.98/x
  3. Step 3: Cross multiply
    1,317,046.02x = 1,972,344.66 × 1,087,939.98
  4. Step 4: Simplify right side
    1,317,046.02x = 2,145,792,609,953.51
  5. Step 5: Solve for x
    x = 2,145,792,609,953.51/1,317,046.02
  6. Step 6: Final answer
    x = 1,629,246.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.