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Finding the Fourth Proportional to 121,268.65, 181,836.03 and 56,282.21

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Solution

The fourth proportional to 121,268.65, 181,836.03 and 56,282.21 is: 84,392.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,268.65 : 181,836.03 = 56,282.21 : x
  2. Step 2: Convert to fraction form
    121,268.65/181,836.03 = 56,282.21/x
  3. Step 3: Cross multiply
    121,268.65x = 181,836.03 × 56,282.21
  4. Step 4: Simplify right side
    121,268.65x = 10,234,133,626.03
  5. Step 5: Solve for x
    x = 10,234,133,626.03/121,268.65
  6. Step 6: Final answer
    x = 84,392.25

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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.