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Finding the Fourth Proportional to 963.16, 1,444.74 and 790.36

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Solution

The fourth proportional to 963.16, 1,444.74 and 790.36 is: 1,185.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    963.16 : 1,444.74 = 790.36 : x
  2. Step 2: Convert to fraction form
    963.16/1,444.74 = 790.36/x
  3. Step 3: Cross multiply
    963.16x = 1,444.74 × 790.36
  4. Step 4: Simplify right side
    963.16x = 1,141,864.71
  5. Step 5: Solve for x
    x = 1,141,864.71/963.16
  6. Step 6: Final answer
    x = 1,185.54

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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.