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Finding the Fourth Proportional to 381,303.10, 571,845.30 and 114,999.40

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Solution

The fourth proportional to 381,303.10, 571,845.30 and 114,999.40 is: 172,466.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,303.10 : 571,845.30 = 114,999.40 : x
  2. Step 2: Convert to fraction form
    381,303.10/571,845.30 = 114,999.40/x
  3. Step 3: Cross multiply
    381,303.10x = 571,845.30 × 114,999.40
  4. Step 4: Simplify right side
    381,303.10x = 65,761,866,392.82
  5. Step 5: Solve for x
    x = 65,761,866,392.82/381,303.10
  6. Step 6: Final answer
    x = 172,466.12

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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.