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Finding the Fourth Proportional to 334,483.12, 501,720.28 and 81,765.82

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Solution

The fourth proportional to 334,483.12, 501,720.28 and 81,765.82 is: 122,647.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,483.12 : 501,720.28 = 81,765.82 : x
  2. Step 2: Convert to fraction form
    334,483.12/501,720.28 = 81,765.82/x
  3. Step 3: Cross multiply
    334,483.12x = 501,720.28 × 81,765.82
  4. Step 4: Simplify right side
    334,483.12x = 41,023,570,527.57
  5. Step 5: Solve for x
    x = 41,023,570,527.57/334,483.12
  6. Step 6: Final answer
    x = 122,647.66

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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.