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Finding the Fourth Proportional to 25,990.81, 35,865.25 and 14,656.67

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Solution

The fourth proportional to 25,990.81, 35,865.25 and 14,656.67 is: 20,225.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,990.81 : 35,865.25 = 14,656.67 : x
  2. Step 2: Convert to fraction form
    25,990.81/35,865.25 = 14,656.67/x
  3. Step 3: Cross multiply
    25,990.81x = 35,865.25 × 14,656.67
  4. Step 4: Simplify right side
    25,990.81x = 525,665,133.72
  5. Step 5: Solve for x
    x = 525,665,133.72/25,990.81
  6. Step 6: Final answer
    x = 20,225.04

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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.