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Finding the Fourth Proportional to 48,671.61, 72,979.47 and 19,054.77

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Solution

The fourth proportional to 48,671.61, 72,979.47 and 19,054.77 is: 28,571.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,671.61 : 72,979.47 = 19,054.77 : x
  2. Step 2: Convert to fraction form
    48,671.61/72,979.47 = 19,054.77/x
  3. Step 3: Cross multiply
    48,671.61x = 72,979.47 × 19,054.77
  4. Step 4: Simplify right side
    48,671.61x = 1,390,607,015.57
  5. Step 5: Solve for x
    x = 1,390,607,015.57/48,671.61
  6. Step 6: Final answer
    x = 28,571.21

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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.