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Finding the Fourth Proportional to 268,634.22, 402,423.18 and 156,078.18

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Solution

The fourth proportional to 268,634.22, 402,423.18 and 156,078.18 is: 233,810.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,634.22 : 402,423.18 = 156,078.18 : x
  2. Step 2: Convert to fraction form
    268,634.22/402,423.18 = 156,078.18/x
  3. Step 3: Cross multiply
    268,634.22x = 402,423.18 × 156,078.18
  4. Step 4: Simplify right side
    268,634.22x = 62,809,477,524.21
  5. Step 5: Solve for x
    x = 62,809,477,524.21/268,634.22
  6. Step 6: Final answer
    x = 233,810.41

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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.