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Finding the Fourth Proportional to 260,634.84, 390,874.50 and 92,124.06

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Solution

The fourth proportional to 260,634.84, 390,874.50 and 92,124.06 is: 138,158.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,634.84 : 390,874.50 = 92,124.06 : x
  2. Step 2: Convert to fraction form
    260,634.84/390,874.50 = 92,124.06/x
  3. Step 3: Cross multiply
    260,634.84x = 390,874.50 × 92,124.06
  4. Step 4: Simplify right side
    260,634.84x = 36,008,945,890.47
  5. Step 5: Solve for x
    x = 36,008,945,890.47/260,634.84
  6. Step 6: Final answer
    x = 138,158.60

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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.