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Finding the Fourth Proportional to 956.85, 1,425.65 and 893.98

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Solution

The fourth proportional to 956.85, 1,425.65 and 893.98 is: 1,331.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.85 : 1,425.65 = 893.98 : x
  2. Step 2: Convert to fraction form
    956.85/1,425.65 = 893.98/x
  3. Step 3: Cross multiply
    956.85x = 1,425.65 × 893.98
  4. Step 4: Simplify right side
    956.85x = 1,274,502.59
  5. Step 5: Solve for x
    x = 1,274,502.59/956.85
  6. Step 6: Final answer
    x = 1,331.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.