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Finding the Fourth Proportional to 9,615.90, 14,400.90 and 4,669.65

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Solution

The fourth proportional to 9,615.90, 14,400.90 and 4,669.65 is: 6,993.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,615.90 : 14,400.90 = 4,669.65 : x
  2. Step 2: Convert to fraction form
    9,615.90/14,400.90 = 4,669.65/x
  3. Step 3: Cross multiply
    9,615.90x = 14,400.90 × 4,669.65
  4. Step 4: Simplify right side
    9,615.90x = 67,247,162.69
  5. Step 5: Solve for x
    x = 67,247,162.69/9,615.90
  6. Step 6: Final answer
    x = 6,993.33

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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.