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Finding the Fourth Proportional to 45,978.90, 63,458.74 and 26,860.90

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Solution

The fourth proportional to 45,978.90, 63,458.74 and 26,860.90 is: 37,072.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,978.90 : 63,458.74 = 26,860.90 : x
  2. Step 2: Convert to fraction form
    45,978.90/63,458.74 = 26,860.90/x
  3. Step 3: Cross multiply
    45,978.90x = 63,458.74 × 26,860.90
  4. Step 4: Simplify right side
    45,978.90x = 1,704,558,869.27
  5. Step 5: Solve for x
    x = 1,704,558,869.27/45,978.90
  6. Step 6: Final answer
    x = 37,072.63

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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.