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Finding the Fourth Proportional to 3,116.63, 4,674.15 and 924.86

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Solution

The fourth proportional to 3,116.63, 4,674.15 and 924.86 is: 1,387.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.63 : 4,674.15 = 924.86 : x
  2. Step 2: Convert to fraction form
    3,116.63/4,674.15 = 924.86/x
  3. Step 3: Cross multiply
    3,116.63x = 4,674.15 × 924.86
  4. Step 4: Simplify right side
    3,116.63x = 4,322,946.05
  5. Step 5: Solve for x
    x = 4,322,946.05/3,116.63
  6. Step 6: Final answer
    x = 1,387.06

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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.