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Finding the Fourth Proportional to 13,393.66, 18,482.00 and 7,424.82

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Solution

The fourth proportional to 13,393.66, 18,482.00 and 7,424.82 is: 10,245.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,393.66 : 18,482.00 = 7,424.82 : x
  2. Step 2: Convert to fraction form
    13,393.66/18,482.00 = 7,424.82/x
  3. Step 3: Cross multiply
    13,393.66x = 18,482.00 × 7,424.82
  4. Step 4: Simplify right side
    13,393.66x = 137,225,541.80
  5. Step 5: Solve for x
    x = 137,225,541.80/13,393.66
  6. Step 6: Final answer
    x = 10,245.56

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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.