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Finding the Fourth Proportional to 75,111.70, 112,682.13 and 22,516.78

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Solution

The fourth proportional to 75,111.70, 112,682.13 and 22,516.78 is: 33,779.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,111.70 : 112,682.13 = 22,516.78 : x
  2. Step 2: Convert to fraction form
    75,111.70/112,682.13 = 22,516.78/x
  3. Step 3: Cross multiply
    75,111.70x = 112,682.13 × 22,516.78
  4. Step 4: Simplify right side
    75,111.70x = 2,537,238,731.14
  5. Step 5: Solve for x
    x = 2,537,238,731.14/75,111.70
  6. Step 6: Final answer
    x = 33,779.54

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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.