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Finding the Fourth Proportional to 9,891.20, 14,842.20 and 4,048.40

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Solution

The fourth proportional to 9,891.20, 14,842.20 and 4,048.40 is: 6,074.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,891.20 : 14,842.20 = 4,048.40 : x
  2. Step 2: Convert to fraction form
    9,891.20/14,842.20 = 4,048.40/x
  3. Step 3: Cross multiply
    9,891.20x = 14,842.20 × 4,048.40
  4. Step 4: Simplify right side
    9,891.20x = 60,087,162.48
  5. Step 5: Solve for x
    x = 60,087,162.48/9,891.20
  6. Step 6: Final answer
    x = 6,074.81

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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.