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Finding the Fourth Proportional to 74,012.40, 111,034.80 and 36,590.40

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Solution

The fourth proportional to 74,012.40, 111,034.80 and 36,590.40 is: 54,893.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,012.40 : 111,034.80 = 36,590.40 : x
  2. Step 2: Convert to fraction form
    74,012.40/111,034.80 = 36,590.40/x
  3. Step 3: Cross multiply
    74,012.40x = 111,034.80 × 36,590.40
  4. Step 4: Simplify right side
    74,012.40x = 4,062,807,745.92
  5. Step 5: Solve for x
    x = 4,062,807,745.92/74,012.40
  6. Step 6: Final answer
    x = 54,893.61

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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.