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Finding the Fourth Proportional to 18,627.47, 27,941.20 and 4,776.47

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Solution

The fourth proportional to 18,627.47, 27,941.20 and 4,776.47 is: 7,164.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,627.47 : 27,941.20 = 4,776.47 : x
  2. Step 2: Convert to fraction form
    18,627.47/27,941.20 = 4,776.47/x
  3. Step 3: Cross multiply
    18,627.47x = 27,941.20 × 4,776.47
  4. Step 4: Simplify right side
    18,627.47x = 133,460,283.56
  5. Step 5: Solve for x
    x = 133,460,283.56/18,627.47
  6. Step 6: Final answer
    x = 7,164.70

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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.