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Finding the Fourth Proportional to 184,390.74, 276,367.41 and 78,987.06

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Solution

The fourth proportional to 184,390.74, 276,367.41 and 78,987.06 is: 118,386.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    184,390.74 : 276,367.41 = 78,987.06 : x
  2. Step 2: Convert to fraction form
    184,390.74/276,367.41 = 78,987.06/x
  3. Step 3: Cross multiply
    184,390.74x = 276,367.41 × 78,987.06
  4. Step 4: Simplify right side
    184,390.74x = 21,829,449,195.71
  5. Step 5: Solve for x
    x = 21,829,449,195.71/184,390.74
  6. Step 6: Final answer
    x = 118,386.91

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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.