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Finding the Fourth Proportional to 75,158.54, 103,788.51 and 56,262.86

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Solution

The fourth proportional to 75,158.54, 103,788.51 and 56,262.86 is: 77,694.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,158.54 : 103,788.51 = 56,262.86 : x
  2. Step 2: Convert to fraction form
    75,158.54/103,788.51 = 56,262.86/x
  3. Step 3: Cross multiply
    75,158.54x = 103,788.51 × 56,262.86
  4. Step 4: Simplify right side
    75,158.54x = 5,839,438,407.74
  5. Step 5: Solve for x
    x = 5,839,438,407.74/75,158.54
  6. Step 6: Final answer
    x = 77,694.94

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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.