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Finding the Fourth Proportional to 1,791,561.12, 2,687,325 and 726,349.98

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Solution

The fourth proportional to 1,791,561.12, 2,687,325 and 726,349.98 is: 1,089,518.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,791,561.12 : 2,687,325 = 726,349.98 : x
  2. Step 2: Convert to fraction form
    1,791,561.12/2,687,325 = 726,349.98/x
  3. Step 3: Cross multiply
    1,791,561.12x = 2,687,325 × 726,349.98
  4. Step 4: Simplify right side
    1,791,561.12x = 1,951,938,460,003.50
  5. Step 5: Solve for x
    x = 1,951,938,460,003.50/1,791,561.12
  6. Step 6: Final answer
    x = 1,089,518.21

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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.