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Finding the Fourth Proportional to 118,479.90, 177,731 and 43,601.48

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Solution

The fourth proportional to 118,479.90, 177,731 and 43,601.48 is: 65,406.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,479.90 : 177,731 = 43,601.48 : x
  2. Step 2: Convert to fraction form
    118,479.90/177,731 = 43,601.48/x
  3. Step 3: Cross multiply
    118,479.90x = 177,731 × 43,601.48
  4. Step 4: Simplify right side
    118,479.90x = 7,749,334,641.88
  5. Step 5: Solve for x
    x = 7,749,334,641.88/118,479.90
  6. Step 6: Final answer
    x = 65,406.32

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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.