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Finding the Fourth Proportional to 268,460.82, 402,440.76 and 90,844.26

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Solution

The fourth proportional to 268,460.82, 402,440.76 and 90,844.26 is: 136,181.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,460.82 : 402,440.76 = 90,844.26 : x
  2. Step 2: Convert to fraction form
    268,460.82/402,440.76 = 90,844.26/x
  3. Step 3: Cross multiply
    268,460.82x = 402,440.76 × 90,844.26
  4. Step 4: Simplify right side
    268,460.82x = 36,559,433,036.04
  5. Step 5: Solve for x
    x = 36,559,433,036.04/268,460.82
  6. Step 6: Final answer
    x = 136,181.63

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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.