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Finding the Fourth Proportional to 75,141.51, 103,671.81 and 43,306.08

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Solution

The fourth proportional to 75,141.51, 103,671.81 and 43,306.08 is: 59,748.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,141.51 : 103,671.81 = 43,306.08 : x
  2. Step 2: Convert to fraction form
    75,141.51/103,671.81 = 43,306.08/x
  3. Step 3: Cross multiply
    75,141.51x = 103,671.81 × 43,306.08
  4. Step 4: Simplify right side
    75,141.51x = 4,489,619,697.60
  5. Step 5: Solve for x
    x = 4,489,619,697.60/75,141.51
  6. Step 6: Final answer
    x = 59,748.86

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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.