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Finding the Fourth Proportional to 13,475.66, 20,176.23 and 6,887.66

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Solution

The fourth proportional to 13,475.66, 20,176.23 and 6,887.66 is: 10,312.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,475.66 : 20,176.23 = 6,887.66 : x
  2. Step 2: Convert to fraction form
    13,475.66/20,176.23 = 6,887.66/x
  3. Step 3: Cross multiply
    13,475.66x = 20,176.23 × 6,887.66
  4. Step 4: Simplify right side
    13,475.66x = 138,967,012.32
  5. Step 5: Solve for x
    x = 138,967,012.32/13,475.66
  6. Step 6: Final answer
    x = 10,312.45

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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.