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Finding the Fourth Proportional to 334,634.40, 501,271.20 and 207,885.60

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Solution

The fourth proportional to 334,634.40, 501,271.20 and 207,885.60 is: 311,405.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,634.40 : 501,271.20 = 207,885.60 : x
  2. Step 2: Convert to fraction form
    334,634.40/501,271.20 = 207,885.60/x
  3. Step 3: Cross multiply
    334,634.40x = 501,271.20 × 207,885.60
  4. Step 4: Simplify right side
    334,634.40x = 104,207,064,174.72
  5. Step 5: Solve for x
    x = 104,207,064,174.72/334,634.40
  6. Step 6: Final answer
    x = 311,405.71

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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.