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Finding the Fourth Proportional to 122,596.80, 183,895.20 and 43,713.60

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Solution

The fourth proportional to 122,596.80, 183,895.20 and 43,713.60 is: 65,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,596.80 : 183,895.20 = 43,713.60 : x
  2. Step 2: Convert to fraction form
    122,596.80/183,895.20 = 43,713.60/x
  3. Step 3: Cross multiply
    122,596.80x = 183,895.20 × 43,713.60
  4. Step 4: Simplify right side
    122,596.80x = 8,038,721,214.72
  5. Step 5: Solve for x
    x = 8,038,721,214.72/122,596.80
  6. Step 6: Final answer
    x = 65,570.40

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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.