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Finding the Fourth Proportional to 11,176.90, 15,670.70 and 11,176.90

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Solution

The fourth proportional to 11,176.90, 15,670.70 and 11,176.90 is: 15,670.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,176.90 : 15,670.70 = 11,176.90 : x
  2. Step 2: Convert to fraction form
    11,176.90/15,670.70 = 11,176.90/x
  3. Step 3: Cross multiply
    11,176.90x = 15,670.70 × 11,176.90
  4. Step 4: Simplify right side
    11,176.90x = 175,149,846.83
  5. Step 5: Solve for x
    x = 175,149,846.83/11,176.90
  6. Step 6: Final answer
    x = 15,670.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.