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Finding the Fourth Proportional to 1,176.95, 1,771.80 and 1,057.88

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Solution

The fourth proportional to 1,176.95, 1,771.80 and 1,057.88 is: 1,592.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.95 : 1,771.80 = 1,057.88 : x
  2. Step 2: Convert to fraction form
    1,176.95/1,771.80 = 1,057.88/x
  3. Step 3: Cross multiply
    1,176.95x = 1,771.80 × 1,057.88
  4. Step 4: Simplify right side
    1,176.95x = 1,874,342.93
  5. Step 5: Solve for x
    x = 1,874,342.93/1,176.95
  6. Step 6: Final answer
    x = 1,592.55

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.