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Finding the Fourth Proportional to 18,851.93, 28,239.62 and 8,841.54

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Solution

The fourth proportional to 18,851.93, 28,239.62 and 8,841.54 is: 13,244.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,851.93 : 28,239.62 = 8,841.54 : x
  2. Step 2: Convert to fraction form
    18,851.93/28,239.62 = 8,841.54/x
  3. Step 3: Cross multiply
    18,851.93x = 28,239.62 × 8,841.54
  4. Step 4: Simplify right side
    18,851.93x = 249,681,729.81
  5. Step 5: Solve for x
    x = 249,681,729.81/18,851.93
  6. Step 6: Final answer
    x = 13,244.36

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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.