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Finding the Fourth Proportional to 74,494.89, 102,802.92 and 40,960.89

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Solution

The fourth proportional to 74,494.89, 102,802.92 and 40,960.89 is: 56,526.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,494.89 : 102,802.92 = 40,960.89 : x
  2. Step 2: Convert to fraction form
    74,494.89/102,802.92 = 40,960.89/x
  3. Step 3: Cross multiply
    74,494.89x = 102,802.92 × 40,960.89
  4. Step 4: Simplify right side
    74,494.89x = 4,210,899,097.80
  5. Step 5: Solve for x
    x = 4,210,899,097.80/74,494.89
  6. Step 6: Final answer
    x = 56,526.01

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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.