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Finding the Fourth Proportional to 42,855.44, 64,293.41 and 17,881.63

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Solution

The fourth proportional to 42,855.44, 64,293.41 and 17,881.63 is: 26,826.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,855.44 : 64,293.41 = 17,881.63 : x
  2. Step 2: Convert to fraction form
    42,855.44/64,293.41 = 17,881.63/x
  3. Step 3: Cross multiply
    42,855.44x = 64,293.41 × 17,881.63
  4. Step 4: Simplify right side
    42,855.44x = 1,149,670,853.03
  5. Step 5: Solve for x
    x = 1,149,670,853.03/42,855.44
  6. Step 6: Final answer
    x = 26,826.72

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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.