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Finding the Fourth Proportional to 265,891.02, 398,861.30 and 105,928.14

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Solution

The fourth proportional to 265,891.02, 398,861.30 and 105,928.14 is: 158,902.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,891.02 : 398,861.30 = 105,928.14 : x
  2. Step 2: Convert to fraction form
    265,891.02/398,861.30 = 105,928.14/x
  3. Step 3: Cross multiply
    265,891.02x = 398,861.30 × 105,928.14
  4. Step 4: Simplify right side
    265,891.02x = 42,250,636,677.67
  5. Step 5: Solve for x
    x = 42,250,636,677.67/265,891.02
  6. Step 6: Final answer
    x = 158,902.08

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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.