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Finding the Fourth Proportional to 119,784.40, 179,611.80 and 49,670.80

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Solution

The fourth proportional to 119,784.40, 179,611.80 and 49,670.80 is: 74,479.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,784.40 : 179,611.80 = 49,670.80 : x
  2. Step 2: Convert to fraction form
    119,784.40/179,611.80 = 49,670.80/x
  3. Step 3: Cross multiply
    119,784.40x = 179,611.80 × 49,670.80
  4. Step 4: Simplify right side
    119,784.40x = 8,921,461,795.44
  5. Step 5: Solve for x
    x = 8,921,461,795.44/119,784.40
  6. Step 6: Final answer
    x = 74,479.33

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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.