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Finding the Fourth Proportional to 1,890,671.79, 2,609,347.66 and 1,074,997.69

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Solution

The fourth proportional to 1,890,671.79, 2,609,347.66 and 1,074,997.69 is: 1,483,622.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890,671.79 : 2,609,347.66 = 1,074,997.69 : x
  2. Step 2: Convert to fraction form
    1,890,671.79/2,609,347.66 = 1,074,997.69/x
  3. Step 3: Cross multiply
    1,890,671.79x = 2,609,347.66 × 1,074,997.69
  4. Step 4: Simplify right side
    1,890,671.79x = 2,805,042,697,696.04
  5. Step 5: Solve for x
    x = 2,805,042,697,696.04/1,890,671.79
  6. Step 6: Final answer
    x = 1,483,622.23

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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.