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Finding the Fourth Proportional to 183,623.68, 275,431.84 and 120,840.40

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Solution

The fourth proportional to 183,623.68, 275,431.84 and 120,840.40 is: 181,258.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,623.68 : 275,431.84 = 120,840.40 : x
  2. Step 2: Convert to fraction form
    183,623.68/275,431.84 = 120,840.40/x
  3. Step 3: Cross multiply
    183,623.68x = 275,431.84 × 120,840.40
  4. Step 4: Simplify right side
    183,623.68x = 33,283,293,718.34
  5. Step 5: Solve for x
    x = 33,283,293,718.34/183,623.68
  6. Step 6: Final answer
    x = 181,258.18

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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.