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Finding the Fourth Proportional to 74,956.64, 103,458.53 and 42,710.27

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Solution

The fourth proportional to 74,956.64, 103,458.53 and 42,710.27 is: 58,950.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,956.64 : 103,458.53 = 42,710.27 : x
  2. Step 2: Convert to fraction form
    74,956.64/103,458.53 = 42,710.27/x
  3. Step 3: Cross multiply
    74,956.64x = 103,458.53 × 42,710.27
  4. Step 4: Simplify right side
    74,956.64x = 4,418,741,019.26
  5. Step 5: Solve for x
    x = 4,418,741,019.26/74,956.64
  6. Step 6: Final answer
    x = 58,950.63

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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.