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Finding the Fourth Proportional to 34,661.40, 51,992.10 and 14,978.40

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Solution

The fourth proportional to 34,661.40, 51,992.10 and 14,978.40 is: 22,467.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,661.40 : 51,992.10 = 14,978.40 : x
  2. Step 2: Convert to fraction form
    34,661.40/51,992.10 = 14,978.40/x
  3. Step 3: Cross multiply
    34,661.40x = 51,992.10 × 14,978.40
  4. Step 4: Simplify right side
    34,661.40x = 778,758,470.64
  5. Step 5: Solve for x
    x = 778,758,470.64/34,661.40
  6. Step 6: Final answer
    x = 22,467.60

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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.