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Finding the Fourth Proportional to 1,307.44, 1,960.03 and 576.46

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Solution

The fourth proportional to 1,307.44, 1,960.03 and 576.46 is: 864.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307.44 : 1,960.03 = 576.46 : x
  2. Step 2: Convert to fraction form
    1,307.44/1,960.03 = 576.46/x
  3. Step 3: Cross multiply
    1,307.44x = 1,960.03 × 576.46
  4. Step 4: Simplify right side
    1,307.44x = 1,129,878.89
  5. Step 5: Solve for x
    x = 1,129,878.89/1,307.44
  6. Step 6: Final answer
    x = 864.19

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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.