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Finding the Fourth Proportional to 7,690.74, 10,612.02 and 4,333.38

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Solution

The fourth proportional to 7,690.74, 10,612.02 and 4,333.38 is: 5,979.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,690.74 : 10,612.02 = 4,333.38 : x
  2. Step 2: Convert to fraction form
    7,690.74/10,612.02 = 4,333.38/x
  3. Step 3: Cross multiply
    7,690.74x = 10,612.02 × 4,333.38
  4. Step 4: Simplify right side
    7,690.74x = 45,985,915.23
  5. Step 5: Solve for x
    x = 45,985,915.23/7,690.74
  6. Step 6: Final answer
    x = 5,979.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.