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Finding the Fourth Proportional to 8,980.70, 12,393.35 and 5,002.16

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Solution

The fourth proportional to 8,980.70, 12,393.35 and 5,002.16 is: 6,902.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980.70 : 12,393.35 = 5,002.16 : x
  2. Step 2: Convert to fraction form
    8,980.70/12,393.35 = 5,002.16/x
  3. Step 3: Cross multiply
    8,980.70x = 12,393.35 × 5,002.16
  4. Step 4: Simplify right side
    8,980.70x = 61,993,532.14
  5. Step 5: Solve for x
    x = 61,993,532.14/8,980.70
  6. Step 6: Final answer
    x = 6,902.97

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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.