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Finding the Fourth Proportional to 4,674.63, 6,990.62 and 3,489.51

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Solution

The fourth proportional to 4,674.63, 6,990.62 and 3,489.51 is: 5,218.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,674.63 : 6,990.62 = 3,489.51 : x
  2. Step 2: Convert to fraction form
    4,674.63/6,990.62 = 3,489.51/x
  3. Step 3: Cross multiply
    4,674.63x = 6,990.62 × 3,489.51
  4. Step 4: Simplify right side
    4,674.63x = 24,393,838.40
  5. Step 5: Solve for x
    x = 24,393,838.40/4,674.63
  6. Step 6: Final answer
    x = 5,218.35

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1.5x scale

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.