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Finding the Fourth Proportional to 577,749.38, 866,829.18 and 257,872.12

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Solution

The fourth proportional to 577,749.38, 866,829.18 and 257,872.12 is: 386,899.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,749.38 : 866,829.18 = 257,872.12 : x
  2. Step 2: Convert to fraction form
    577,749.38/866,829.18 = 257,872.12/x
  3. Step 3: Cross multiply
    577,749.38x = 866,829.18 × 257,872.12
  4. Step 4: Simplify right side
    577,749.38x = 223,531,078,324.46
  5. Step 5: Solve for x
    x = 223,531,078,324.46/577,749.38
  6. Step 6: Final answer
    x = 386,899.73

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1.5x scale

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.