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Finding the Fourth Proportional to 14,860.65, 20,507.91 and 8,892.57

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Solution

The fourth proportional to 14,860.65, 20,507.91 and 8,892.57 is: 12,271.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,860.65 : 20,507.91 = 8,892.57 : x
  2. Step 2: Convert to fraction form
    14,860.65/20,507.91 = 8,892.57/x
  3. Step 3: Cross multiply
    14,860.65x = 20,507.91 × 8,892.57
  4. Step 4: Simplify right side
    14,860.65x = 182,368,025.23
  5. Step 5: Solve for x
    x = 182,368,025.23/14,860.65
  6. Step 6: Final answer
    x = 12,271.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.