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Finding the Fourth Proportional to 100,671.93, 151,124.55 and 54,015.93

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Solution

The fourth proportional to 100,671.93, 151,124.55 and 54,015.93 is: 81,086.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,671.93 : 151,124.55 = 54,015.93 : x
  2. Step 2: Convert to fraction form
    100,671.93/151,124.55 = 54,015.93/x
  3. Step 3: Cross multiply
    100,671.93x = 151,124.55 × 54,015.93
  4. Step 4: Simplify right side
    100,671.93x = 8,163,133,114.08
  5. Step 5: Solve for x
    x = 8,163,133,114.08/100,671.93
  6. Step 6: Final answer
    x = 81,086.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.