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Finding the Fourth Proportional to 665,842.56, 998,812.44 and 192,530.40

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Solution

The fourth proportional to 665,842.56, 998,812.44 and 192,530.40 is: 288,809.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,842.56 : 998,812.44 = 192,530.40 : x
  2. Step 2: Convert to fraction form
    665,842.56/998,812.44 = 192,530.40/x
  3. Step 3: Cross multiply
    665,842.56x = 998,812.44 × 192,530.40
  4. Step 4: Simplify right side
    665,842.56x = 192,301,758,598.18
  5. Step 5: Solve for x
    x = 192,301,758,598.18/665,842.56
  6. Step 6: Final answer
    x = 288,809.65

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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.