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Finding the Fourth Proportional to 190,367.84, 262,809.48 and 121,526.54

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Solution

The fourth proportional to 190,367.84, 262,809.48 and 121,526.54 is: 167,771.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,367.84 : 262,809.48 = 121,526.54 : x
  2. Step 2: Convert to fraction form
    190,367.84/262,809.48 = 121,526.54/x
  3. Step 3: Cross multiply
    190,367.84x = 262,809.48 × 121,526.54
  4. Step 4: Simplify right side
    190,367.84x = 31,938,326,783.60
  5. Step 5: Solve for x
    x = 31,938,326,783.60/190,367.84
  6. Step 6: Final answer
    x = 167,771.65

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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.