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Finding the Fourth Proportional to 74,883.94, 103,340.01 and 40,892.49

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Solution

The fourth proportional to 74,883.94, 103,340.01 and 40,892.49 is: 56,431.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,883.94 : 103,340.01 = 40,892.49 : x
  2. Step 2: Convert to fraction form
    74,883.94/103,340.01 = 40,892.49/x
  3. Step 3: Cross multiply
    74,883.94x = 103,340.01 × 40,892.49
  4. Step 4: Simplify right side
    74,883.94x = 4,225,830,325.52
  5. Step 5: Solve for x
    x = 4,225,830,325.52/74,883.94
  6. Step 6: Final answer
    x = 56,431.73

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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.