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Finding the Fourth Proportional to 7,674.60, 11,511.90 and 4,175.40

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Solution

The fourth proportional to 7,674.60, 11,511.90 and 4,175.40 is: 6,263.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,674.60 : 11,511.90 = 4,175.40 : x
  2. Step 2: Convert to fraction form
    7,674.60/11,511.90 = 4,175.40/x
  3. Step 3: Cross multiply
    7,674.60x = 11,511.90 × 4,175.40
  4. Step 4: Simplify right side
    7,674.60x = 48,066,787.26
  5. Step 5: Solve for x
    x = 48,066,787.26/7,674.60
  6. Step 6: Final answer
    x = 6,263.10

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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.