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Finding the Fourth Proportional to 74,220, 102,423.96 and 44,412

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Solution

The fourth proportional to 74,220, 102,423.96 and 44,412 is: 61,288.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,220 : 102,423.96 = 44,412 : x
  2. Step 2: Convert to fraction form
    74,220/102,423.96 = 44,412/x
  3. Step 3: Cross multiply
    74,220x = 102,423.96 × 44,412
  4. Step 4: Simplify right side
    74,220x = 4,548,852,911.52
  5. Step 5: Solve for x
    x = 4,548,852,911.52/74,220
  6. Step 6: Final answer
    x = 61,288.78

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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.