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Finding the Fourth Proportional to 131,832.57, 181,940.20 and 74,482.48

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Solution

The fourth proportional to 131,832.57, 181,940.20 and 74,482.48 is: 102,792.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,832.57 : 181,940.20 = 74,482.48 : x
  2. Step 2: Convert to fraction form
    131,832.57/181,940.20 = 74,482.48/x
  3. Step 3: Cross multiply
    131,832.57x = 181,940.20 × 74,482.48
  4. Step 4: Simplify right side
    131,832.57x = 13,551,356,666.64
  5. Step 5: Solve for x
    x = 13,551,356,666.64/131,832.57
  6. Step 6: Final answer
    x = 102,792.18

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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.