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Finding the Fourth Proportional to 18,847.68, 28,271.68 and 4,996.68

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Solution

The fourth proportional to 18,847.68, 28,271.68 and 4,996.68 is: 7,495.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,847.68 : 28,271.68 = 4,996.68 : x
  2. Step 2: Convert to fraction form
    18,847.68/28,271.68 = 4,996.68/x
  3. Step 3: Cross multiply
    18,847.68x = 28,271.68 × 4,996.68
  4. Step 4: Simplify right side
    18,847.68x = 141,264,538.02
  5. Step 5: Solve for x
    x = 141,264,538.02/18,847.68
  6. Step 6: Final answer
    x = 7,495.06

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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.