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Finding the Fourth Proportional to 508,446.72, 701,656.56 and 282,091.68

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Solution

The fourth proportional to 508,446.72, 701,656.56 and 282,091.68 is: 389,286.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,446.72 : 701,656.56 = 282,091.68 : x
  2. Step 2: Convert to fraction form
    508,446.72/701,656.56 = 282,091.68/x
  3. Step 3: Cross multiply
    508,446.72x = 701,656.56 × 282,091.68
  4. Step 4: Simplify right side
    508,446.72x = 197,931,477,793.42
  5. Step 5: Solve for x
    x = 197,931,477,793.42/508,446.72
  6. Step 6: Final answer
    x = 389,286.57

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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.