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Finding the Fourth Proportional to 192,712.95, 265,912.15 and 121,041.92

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Solution

The fourth proportional to 192,712.95, 265,912.15 and 121,041.92 is: 167,017.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,712.95 : 265,912.15 = 121,041.92 : x
  2. Step 2: Convert to fraction form
    192,712.95/265,912.15 = 121,041.92/x
  3. Step 3: Cross multiply
    192,712.95x = 265,912.15 × 121,041.92
  4. Step 4: Simplify right side
    192,712.95x = 32,186,516,582.12
  5. Step 5: Solve for x
    x = 32,186,516,582.12/192,712.95
  6. Step 6: Final answer
    x = 167,017.92

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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.