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Finding the Fourth Proportional to 74,642.42, 103,010.88 and 56,212.54

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Solution

The fourth proportional to 74,642.42, 103,010.88 and 56,212.54 is: 77,576.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,642.42 : 103,010.88 = 56,212.54 : x
  2. Step 2: Convert to fraction form
    74,642.42/103,010.88 = 56,212.54/x
  3. Step 3: Cross multiply
    74,642.42x = 103,010.88 × 56,212.54
  4. Step 4: Simplify right side
    74,642.42x = 5,790,503,212.44
  5. Step 5: Solve for x
    x = 5,790,503,212.44/74,642.42
  6. Step 6: Final answer
    x = 77,576.57

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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.