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Finding the Fourth Proportional to 74,950.61, 103,433.32 and 40,961.20

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Solution

The fourth proportional to 74,950.61, 103,433.32 and 40,961.20 is: 56,527.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,950.61 : 103,433.32 = 40,961.20 : x
  2. Step 2: Convert to fraction form
    74,950.61/103,433.32 = 40,961.20/x
  3. Step 3: Cross multiply
    74,950.61x = 103,433.32 × 40,961.20
  4. Step 4: Simplify right side
    74,950.61x = 4,236,752,907.18
  5. Step 5: Solve for x
    x = 4,236,752,907.18/74,950.61
  6. Step 6: Final answer
    x = 56,527.26

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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.