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Finding the Fourth Proportional to 122,718.80, 183,948.60 and 70,014.80

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Solution

The fourth proportional to 122,718.80, 183,948.60 and 70,014.80 is: 104,948.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,718.80 : 183,948.60 = 70,014.80 : x
  2. Step 2: Convert to fraction form
    122,718.80/183,948.60 = 70,014.80/x
  3. Step 3: Cross multiply
    122,718.80x = 183,948.60 × 70,014.80
  4. Step 4: Simplify right side
    122,718.80x = 12,879,124,439.28
  5. Step 5: Solve for x
    x = 12,879,124,439.28/122,718.80
  6. Step 6: Final answer
    x = 104,948.26

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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.