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Finding the Fourth Proportional to 4.70, 7.04 and 4.64

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Solution

The fourth proportional to 4.70, 7.04 and 4.64 is: 6.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.70 : 7.04 = 4.64 : x
  2. Step 2: Convert to fraction form
    4.70/7.04 = 4.64/x
  3. Step 3: Cross multiply
    4.70x = 7.04 × 4.64
  4. Step 4: Simplify right side
    4.70x = 32.64
  5. Step 5: Solve for x
    x = 32.64/4.70
  6. Step 6: Final answer
    x = 6.94

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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.