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Finding the Fourth Proportional to 122,674.70, 183,995.85 and 42,695.51

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Solution

The fourth proportional to 122,674.70, 183,995.85 and 42,695.51 is: 64,037.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,674.70 : 183,995.85 = 42,695.51 : x
  2. Step 2: Convert to fraction form
    122,674.70/183,995.85 = 42,695.51/x
  3. Step 3: Cross multiply
    122,674.70x = 183,995.85 × 42,695.51
  4. Step 4: Simplify right side
    122,674.70x = 7,855,795,893.76
  5. Step 5: Solve for x
    x = 7,855,795,893.76/122,674.70
  6. Step 6: Final answer
    x = 64,037.62

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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.