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Finding the Fourth Proportional to 9,860.40, 14,794.20 and 4,021.20

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Solution

The fourth proportional to 9,860.40, 14,794.20 and 4,021.20 is: 6,033.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,860.40 : 14,794.20 = 4,021.20 : x
  2. Step 2: Convert to fraction form
    9,860.40/14,794.20 = 4,021.20/x
  3. Step 3: Cross multiply
    9,860.40x = 14,794.20 × 4,021.20
  4. Step 4: Simplify right side
    9,860.40x = 59,490,437.04
  5. Step 5: Solve for x
    x = 59,490,437.04/9,860.40
  6. Step 6: Final answer
    x = 6,033.27

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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.