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Finding the Fourth Proportional to 74,929.60, 112,394.40 and 37,604.80

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Solution

The fourth proportional to 74,929.60, 112,394.40 and 37,604.80 is: 56,407.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,929.60 : 112,394.40 = 37,604.80 : x
  2. Step 2: Convert to fraction form
    74,929.60/112,394.40 = 37,604.80/x
  3. Step 3: Cross multiply
    74,929.60x = 112,394.40 × 37,604.80
  4. Step 4: Simplify right side
    74,929.60x = 4,226,568,933.12
  5. Step 5: Solve for x
    x = 4,226,568,933.12/74,929.60
  6. Step 6: Final answer
    x = 56,407.20

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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.