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Finding the Fourth Proportional to 58,072.80, 86,914.80 and 51,074.40

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Solution

The fourth proportional to 58,072.80, 86,914.80 and 51,074.40 is: 76,440.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,072.80 : 86,914.80 = 51,074.40 : x
  2. Step 2: Convert to fraction form
    58,072.80/86,914.80 = 51,074.40/x
  3. Step 3: Cross multiply
    58,072.80x = 86,914.80 × 51,074.40
  4. Step 4: Simplify right side
    58,072.80x = 4,439,121,261.12
  5. Step 5: Solve for x
    x = 4,439,121,261.12/58,072.80
  6. Step 6: Final answer
    x = 76,440.63

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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.