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Finding the Fourth Proportional to 74,908.64, 103,368.72 and 41,372

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Solution

The fourth proportional to 74,908.64, 103,368.72 and 41,372 is: 57,090.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,908.64 : 103,368.72 = 41,372 : x
  2. Step 2: Convert to fraction form
    74,908.64/103,368.72 = 41,372/x
  3. Step 3: Cross multiply
    74,908.64x = 103,368.72 × 41,372
  4. Step 4: Simplify right side
    74,908.64x = 4,276,570,683.84
  5. Step 5: Solve for x
    x = 4,276,570,683.84/74,908.64
  6. Step 6: Final answer
    x = 57,090.49

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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.