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Finding the Fourth Proportional to 9,859.65, 14,780.66 and 3,618.22

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Solution

The fourth proportional to 9,859.65, 14,780.66 and 3,618.22 is: 5,424.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,859.65 : 14,780.66 = 3,618.22 : x
  2. Step 2: Convert to fraction form
    9,859.65/14,780.66 = 3,618.22/x
  3. Step 3: Cross multiply
    9,859.65x = 14,780.66 × 3,618.22
  4. Step 4: Simplify right side
    9,859.65x = 53,479,605.72
  5. Step 5: Solve for x
    x = 53,479,605.72/9,859.65
  6. Step 6: Final answer
    x = 5,424.09

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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.