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Finding the Fourth Proportional to 10,658.88, 14,708.72 and 5,879.66

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Solution

The fourth proportional to 10,658.88, 14,708.72 and 5,879.66 is: 8,113.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,658.88 : 14,708.72 = 5,879.66 : x
  2. Step 2: Convert to fraction form
    10,658.88/14,708.72 = 5,879.66/x
  3. Step 3: Cross multiply
    10,658.88x = 14,708.72 × 5,879.66
  4. Step 4: Simplify right side
    10,658.88x = 86,482,272.64
  5. Step 5: Solve for x
    x = 86,482,272.64/10,658.88
  6. Step 6: Final answer
    x = 8,113.64

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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.