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Finding the Fourth Proportional to 18,393.44, 25,368.16 and 12,019.52

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Solution

The fourth proportional to 18,393.44, 25,368.16 and 12,019.52 is: 16,577.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,393.44 : 25,368.16 = 12,019.52 : x
  2. Step 2: Convert to fraction form
    18,393.44/25,368.16 = 12,019.52/x
  3. Step 3: Cross multiply
    18,393.44x = 25,368.16 × 12,019.52
  4. Step 4: Simplify right side
    18,393.44x = 304,913,106.48
  5. Step 5: Solve for x
    x = 304,913,106.48/18,393.44
  6. Step 6: Final answer
    x = 16,577.27

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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.