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Finding the Fourth Proportional to 28,392.65, 42,588.96 and 9,674.66

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Solution

The fourth proportional to 28,392.65, 42,588.96 and 9,674.66 is: 14,511.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,392.65 : 42,588.96 = 9,674.66 : x
  2. Step 2: Convert to fraction form
    28,392.65/42,588.96 = 9,674.66/x
  3. Step 3: Cross multiply
    28,392.65x = 42,588.96 × 9,674.66
  4. Step 4: Simplify right side
    28,392.65x = 412,033,494.81
  5. Step 5: Solve for x
    x = 412,033,494.81/28,392.65
  6. Step 6: Final answer
    x = 14,511.98

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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.