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Finding the Fourth Proportional to 74,470.64, 102,793.44 and 47,685.32

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Solution

The fourth proportional to 74,470.64, 102,793.44 and 47,685.32 is: 65,821.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,470.64 : 102,793.44 = 47,685.32 : x
  2. Step 2: Convert to fraction form
    74,470.64/102,793.44 = 47,685.32/x
  3. Step 3: Cross multiply
    74,470.64x = 102,793.44 × 47,685.32
  4. Step 4: Simplify right side
    74,470.64x = 4,901,738,080.30
  5. Step 5: Solve for x
    x = 4,901,738,080.30/74,470.64
  6. Step 6: Final answer
    x = 65,821.08

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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.