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Finding the Fourth Proportional to 74,799.65, 103,208.48 and 47,586.54

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Solution

The fourth proportional to 74,799.65, 103,208.48 and 47,586.54 is: 65,659.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,799.65 : 103,208.48 = 47,586.54 : x
  2. Step 2: Convert to fraction form
    74,799.65/103,208.48 = 47,586.54/x
  3. Step 3: Cross multiply
    74,799.65x = 103,208.48 × 47,586.54
  4. Step 4: Simplify right side
    74,799.65x = 4,911,334,208.86
  5. Step 5: Solve for x
    x = 4,911,334,208.86/74,799.65
  6. Step 6: Final answer
    x = 65,659.85

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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.