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Finding the Fourth Proportional to 3,159.79, 4,739.13 and 967.93

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Solution

The fourth proportional to 3,159.79, 4,739.13 and 967.93 is: 1,451.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.79 : 4,739.13 = 967.93 : x
  2. Step 2: Convert to fraction form
    3,159.79/4,739.13 = 967.93/x
  3. Step 3: Cross multiply
    3,159.79x = 4,739.13 × 967.93
  4. Step 4: Simplify right side
    3,159.79x = 4,587,134.25
  5. Step 5: Solve for x
    x = 4,587,134.25/3,159.79
  6. Step 6: Final answer
    x = 1,451.72

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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.