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Finding the Fourth Proportional to 331,809.36, 457,907.64 and 186,640.32

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Solution

The fourth proportional to 331,809.36, 457,907.64 and 186,640.32 is: 257,569.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,809.36 : 457,907.64 = 186,640.32 : x
  2. Step 2: Convert to fraction form
    331,809.36/457,907.64 = 186,640.32/x
  3. Step 3: Cross multiply
    331,809.36x = 457,907.64 × 186,640.32
  4. Step 4: Simplify right side
    331,809.36x = 85,464,028,460.04
  5. Step 5: Solve for x
    x = 85,464,028,460.04/331,809.36
  6. Step 6: Final answer
    x = 257,569.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.