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Finding the Fourth Proportional to 1,192,607.74, 1,789,741.06 and 770,837.50

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Solution

The fourth proportional to 1,192,607.74, 1,789,741.06 and 770,837.50 is: 1,156,792.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192,607.74 : 1,789,741.06 = 770,837.50 : x
  2. Step 2: Convert to fraction form
    1,192,607.74/1,789,741.06 = 770,837.50/x
  3. Step 3: Cross multiply
    1,192,607.74x = 1,789,741.06 × 770,837.50
  4. Step 4: Simplify right side
    1,192,607.74x = 1,379,599,524,337.75
  5. Step 5: Solve for x
    x = 1,379,599,524,337.75/1,192,607.74
  6. Step 6: Final answer
    x = 1,156,792.36

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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.