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Finding the Fourth Proportional to 9,981.70, 14,972.55 and 7,357.30

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Solution

The fourth proportional to 9,981.70, 14,972.55 and 7,357.30 is: 11,035.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,981.70 : 14,972.55 = 7,357.30 : x
  2. Step 2: Convert to fraction form
    9,981.70/14,972.55 = 7,357.30/x
  3. Step 3: Cross multiply
    9,981.70x = 14,972.55 × 7,357.30
  4. Step 4: Simplify right side
    9,981.70x = 110,157,542.12
  5. Step 5: Solve for x
    x = 110,157,542.12/9,981.70
  6. Step 6: Final answer
    x = 11,035.95

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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.