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Finding the Fourth Proportional to 1,040.69, 1,436.10 and 746.45

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Solution

The fourth proportional to 1,040.69, 1,436.10 and 746.45 is: 1,030.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.69 : 1,436.10 = 746.45 : x
  2. Step 2: Convert to fraction form
    1,040.69/1,436.10 = 746.45/x
  3. Step 3: Cross multiply
    1,040.69x = 1,436.10 × 746.45
  4. Step 4: Simplify right side
    1,040.69x = 1,071,976.85
  5. Step 5: Solve for x
    x = 1,071,976.85/1,040.69
  6. Step 6: Final answer
    x = 1,030.06

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.