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Finding the Fourth Proportional to 122,967.20, 184,450.80 and 70,479.20

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Solution

The fourth proportional to 122,967.20, 184,450.80 and 70,479.20 is: 105,718.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,967.20 : 184,450.80 = 70,479.20 : x
  2. Step 2: Convert to fraction form
    122,967.20/184,450.80 = 70,479.20/x
  3. Step 3: Cross multiply
    122,967.20x = 184,450.80 × 70,479.20
  4. Step 4: Simplify right side
    122,967.20x = 12,999,944,823.36
  5. Step 5: Solve for x
    x = 12,999,944,823.36/122,967.20
  6. Step 6: Final answer
    x = 105,718.80

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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.