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Finding the Fourth Proportional to 46,203.78, 69,310.08 and 12,923.88

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Solution

The fourth proportional to 46,203.78, 69,310.08 and 12,923.88 is: 19,387.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,203.78 : 69,310.08 = 12,923.88 : x
  2. Step 2: Convert to fraction form
    46,203.78/69,310.08 = 12,923.88/x
  3. Step 3: Cross multiply
    46,203.78x = 69,310.08 × 12,923.88
  4. Step 4: Simplify right side
    46,203.78x = 895,755,156.71
  5. Step 5: Solve for x
    x = 895,755,156.71/46,203.78
  6. Step 6: Final answer
    x = 19,387.05

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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.