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Finding the Fourth Proportional to 34,767.14, 47,978.69 and 18,851.63

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Solution

The fourth proportional to 34,767.14, 47,978.69 and 18,851.63 is: 26,015.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,767.14 : 47,978.69 = 18,851.63 : x
  2. Step 2: Convert to fraction form
    34,767.14/47,978.69 = 18,851.63/x
  3. Step 3: Cross multiply
    34,767.14x = 47,978.69 × 18,851.63
  4. Step 4: Simplify right side
    34,767.14x = 904,476,177.61
  5. Step 5: Solve for x
    x = 904,476,177.61/34,767.14
  6. Step 6: Final answer
    x = 26,015.26

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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.