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Finding the Fourth Proportional to 18,628.00, 25,705.08 and 10,970.06

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Solution

The fourth proportional to 18,628.00, 25,705.08 and 10,970.06 is: 15,137.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,628.00 : 25,705.08 = 10,970.06 : x
  2. Step 2: Convert to fraction form
    18,628.00/25,705.08 = 10,970.06/x
  3. Step 3: Cross multiply
    18,628.00x = 25,705.08 × 10,970.06
  4. Step 4: Simplify right side
    18,628.00x = 281,986,141.38
  5. Step 5: Solve for x
    x = 281,986,141.38/18,628.00
  6. Step 6: Final answer
    x = 15,137.76

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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.