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Finding the Fourth Proportional to 74,498.94, 102,808.54 and 40,964.94

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Solution

The fourth proportional to 74,498.94, 102,808.54 and 40,964.94 is: 56,531.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,498.94 : 102,808.54 = 40,964.94 : x
  2. Step 2: Convert to fraction form
    74,498.94/102,808.54 = 40,964.94/x
  3. Step 3: Cross multiply
    74,498.94x = 102,808.54 × 40,964.94
  4. Step 4: Simplify right side
    74,498.94x = 4,211,545,467.76
  5. Step 5: Solve for x
    x = 4,211,545,467.76/74,498.94
  6. Step 6: Final answer
    x = 56,531.62

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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.