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Finding the Fourth Proportional to 1,176.12, 1,623.86 and 734.12

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Solution

The fourth proportional to 1,176.12, 1,623.86 and 734.12 is: 1,013.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.12 : 1,623.86 = 734.12 : x
  2. Step 2: Convert to fraction form
    1,176.12/1,623.86 = 734.12/x
  3. Step 3: Cross multiply
    1,176.12x = 1,623.86 × 734.12
  4. Step 4: Simplify right side
    1,176.12x = 1,192,108.10
  5. Step 5: Solve for x
    x = 1,192,108.10/1,176.12
  6. Step 6: Final answer
    x = 1,013.59

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1.5x scale

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.