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Finding the Fourth Proportional to 393,058.44, 589,485.60 and 112,510.08

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Solution

The fourth proportional to 393,058.44, 589,485.60 and 112,510.08 is: 168,735.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,058.44 : 589,485.60 = 112,510.08 : x
  2. Step 2: Convert to fraction form
    393,058.44/589,485.60 = 112,510.08/x
  3. Step 3: Cross multiply
    393,058.44x = 589,485.60 × 112,510.08
  4. Step 4: Simplify right side
    393,058.44x = 66,323,072,014.85
  5. Step 5: Solve for x
    x = 66,323,072,014.85/393,058.44
  6. Step 6: Final answer
    x = 168,735.91

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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.