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Finding the Fourth Proportional to 265,636.16, 398,570.88 and 140,986.88

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Solution

The fourth proportional to 265,636.16, 398,570.88 and 140,986.88 is: 211,542.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,636.16 : 398,570.88 = 140,986.88 : x
  2. Step 2: Convert to fraction form
    265,636.16/398,570.88 = 140,986.88/x
  3. Step 3: Cross multiply
    265,636.16x = 398,570.88 × 140,986.88
  4. Step 4: Simplify right side
    265,636.16x = 56,193,264,830.05
  5. Step 5: Solve for x
    x = 56,193,264,830.05/265,636.16
  6. Step 6: Final answer
    x = 211,542.23

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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.