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Finding the Fourth Proportional to 265,803.80, 398,705.70 and 133,093.40

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Solution

The fourth proportional to 265,803.80, 398,705.70 and 133,093.40 is: 199,640.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,803.80 : 398,705.70 = 133,093.40 : x
  2. Step 2: Convert to fraction form
    265,803.80/398,705.70 = 133,093.40/x
  3. Step 3: Cross multiply
    265,803.80x = 398,705.70 × 133,093.40
  4. Step 4: Simplify right side
    265,803.80x = 53,065,097,212.38
  5. Step 5: Solve for x
    x = 53,065,097,212.38/265,803.80
  6. Step 6: Final answer
    x = 199,640.10

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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.