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Finding the Fourth Proportional to 122,589.76, 183,884.64 and 39,483.76

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Solution

The fourth proportional to 122,589.76, 183,884.64 and 39,483.76 is: 59,225.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,589.76 : 183,884.64 = 39,483.76 : x
  2. Step 2: Convert to fraction form
    122,589.76/183,884.64 = 39,483.76/x
  3. Step 3: Cross multiply
    122,589.76x = 183,884.64 × 39,483.76
  4. Step 4: Simplify right side
    122,589.76x = 7,260,456,993.45
  5. Step 5: Solve for x
    x = 7,260,456,993.45/122,589.76
  6. Step 6: Final answer
    x = 59,225.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.