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Finding the Fourth Proportional to 1,890,713.58, 2,609,192.85 and 1,031,292.29

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Solution

The fourth proportional to 1,890,713.58, 2,609,192.85 and 1,031,292.29 is: 1,423,187.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890,713.58 : 2,609,192.85 = 1,031,292.29 : x
  2. Step 2: Convert to fraction form
    1,890,713.58/2,609,192.85 = 1,031,292.29/x
  3. Step 3: Cross multiply
    1,890,713.58x = 2,609,192.85 × 1,031,292.29
  4. Step 4: Simplify right side
    1,890,713.58x = 2,690,840,456,282.16
  5. Step 5: Solve for x
    x = 2,690,840,456,282.16/1,890,713.58
  6. Step 6: Final answer
    x = 1,423,187.78

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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.