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Finding the Fourth Proportional to 19,204.50, 28,806.75 and 4,612.50

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Solution

The fourth proportional to 19,204.50, 28,806.75 and 4,612.50 is: 6,918.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,204.50 : 28,806.75 = 4,612.50 : x
  2. Step 2: Convert to fraction form
    19,204.50/28,806.75 = 4,612.50/x
  3. Step 3: Cross multiply
    19,204.50x = 28,806.75 × 4,612.50
  4. Step 4: Simplify right side
    19,204.50x = 132,871,134.38
  5. Step 5: Solve for x
    x = 132,871,134.38/19,204.50
  6. Step 6: Final answer
    x = 6,918.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.