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Finding the Fourth Proportional to 431,967.93, 648,076.25 and 132,492.43

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Solution

The fourth proportional to 431,967.93, 648,076.25 and 132,492.43 is: 198,776.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,967.93 : 648,076.25 = 132,492.43 : x
  2. Step 2: Convert to fraction form
    431,967.93/648,076.25 = 132,492.43/x
  3. Step 3: Cross multiply
    431,967.93x = 648,076.25 × 132,492.43
  4. Step 4: Simplify right side
    431,967.93x = 85,865,197,187.79
  5. Step 5: Solve for x
    x = 85,865,197,187.79/431,967.93
  6. Step 6: Final answer
    x = 198,776.79

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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.