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Finding the Fourth Proportional to 74,661.70, 103,034.99 and 40,671.97

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Solution

The fourth proportional to 74,661.70, 103,034.99 and 40,671.97 is: 56,128.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,661.70 : 103,034.99 = 40,671.97 : x
  2. Step 2: Convert to fraction form
    74,661.70/103,034.99 = 40,671.97/x
  3. Step 3: Cross multiply
    74,661.70x = 103,034.99 × 40,671.97
  4. Step 4: Simplify right side
    74,661.70x = 4,190,636,217.11
  5. Step 5: Solve for x
    x = 4,190,636,217.11/74,661.70
  6. Step 6: Final answer
    x = 56,128.33

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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.