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Finding the Fourth Proportional to 9,981.70, 14,984.70 and 5,048.80

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Solution

The fourth proportional to 9,981.70, 14,984.70 and 5,048.80 is: 7,579.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,981.70 : 14,984.70 = 5,048.80 : x
  2. Step 2: Convert to fraction form
    9,981.70/14,984.70 = 5,048.80/x
  3. Step 3: Cross multiply
    9,981.70x = 14,984.70 × 5,048.80
  4. Step 4: Simplify right side
    9,981.70x = 75,654,753.36
  5. Step 5: Solve for x
    x = 75,654,753.36/9,981.70
  6. Step 6: Final answer
    x = 7,579.35

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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.