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Finding the Fourth Proportional to 122,685.60, 183,913.20 and 96,016.80

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Solution

The fourth proportional to 122,685.60, 183,913.20 and 96,016.80 is: 143,935.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,685.60 : 183,913.20 = 96,016.80 : x
  2. Step 2: Convert to fraction form
    122,685.60/183,913.20 = 96,016.80/x
  3. Step 3: Cross multiply
    122,685.60x = 183,913.20 × 96,016.80
  4. Step 4: Simplify right side
    122,685.60x = 17,658,756,941.76
  5. Step 5: Solve for x
    x = 17,658,756,941.76/122,685.60
  6. Step 6: Final answer
    x = 143,935.04

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1.5x scale

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.