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Finding the Fourth Proportional to 18,639.94, 25,723.02 and 10,681.96

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Solution

The fourth proportional to 18,639.94, 25,723.02 and 10,681.96 is: 14,741.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.94 : 25,723.02 = 10,681.96 : x
  2. Step 2: Convert to fraction form
    18,639.94/25,723.02 = 10,681.96/x
  3. Step 3: Cross multiply
    18,639.94x = 25,723.02 × 10,681.96
  4. Step 4: Simplify right side
    18,639.94x = 274,772,270.72
  5. Step 5: Solve for x
    x = 274,772,270.72/18,639.94
  6. Step 6: Final answer
    x = 14,741.05

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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.