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Finding the Fourth Proportional to 74,401.70, 103,929.10 and 74,401.70

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Solution

The fourth proportional to 74,401.70, 103,929.10 and 74,401.70 is: 103,929.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,401.70 : 103,929.10 = 74,401.70 : x
  2. Step 2: Convert to fraction form
    74,401.70/103,929.10 = 74,401.70/x
  3. Step 3: Cross multiply
    74,401.70x = 103,929.10 × 74,401.70
  4. Step 4: Simplify right side
    74,401.70x = 7,732,501,719.47
  5. Step 5: Solve for x
    x = 7,732,501,719.47/74,401.70
  6. Step 6: Final answer
    x = 103,929.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.