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Finding the Fourth Proportional to 1,159,263.80, 1,738,895.70 and 823,340.60

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Solution

The fourth proportional to 1,159,263.80, 1,738,895.70 and 823,340.60 is: 1,235,010.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159,263.80 : 1,738,895.70 = 823,340.60 : x
  2. Step 2: Convert to fraction form
    1,159,263.80/1,738,895.70 = 823,340.60/x
  3. Step 3: Cross multiply
    1,159,263.80x = 1,738,895.70 × 823,340.60
  4. Step 4: Simplify right side
    1,159,263.80x = 1,431,703,428,975.42
  5. Step 5: Solve for x
    x = 1,431,703,428,975.42/1,159,263.80
  6. Step 6: Final answer
    x = 1,235,010.90

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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.