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Finding the Fourth Proportional to 18,436.80, 25,442.78 and 10,053.30

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Solution

The fourth proportional to 18,436.80, 25,442.78 and 10,053.30 is: 13,873.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,436.80 : 25,442.78 = 10,053.30 : x
  2. Step 2: Convert to fraction form
    18,436.80/25,442.78 = 10,053.30/x
  3. Step 3: Cross multiply
    18,436.80x = 25,442.78 × 10,053.30
  4. Step 4: Simplify right side
    18,436.80x = 255,783,900.17
  5. Step 5: Solve for x
    x = 255,783,900.17/18,436.80
  6. Step 6: Final answer
    x = 13,873.55

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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.