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Finding the Fourth Proportional to 74,977.80, 112,465.62 and 19,573.80

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Solution

The fourth proportional to 74,977.80, 112,465.62 and 19,573.80 is: 29,360.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,977.80 : 112,465.62 = 19,573.80 : x
  2. Step 2: Convert to fraction form
    74,977.80/112,465.62 = 19,573.80/x
  3. Step 3: Cross multiply
    74,977.80x = 112,465.62 × 19,573.80
  4. Step 4: Simplify right side
    74,977.80x = 2,201,379,552.76
  5. Step 5: Solve for x
    x = 2,201,379,552.76/74,977.80
  6. Step 6: Final answer
    x = 29,360.42

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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.