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Finding the Fourth Proportional to 7,672.88, 10,588.88 and 4,315.68

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Solution

The fourth proportional to 7,672.88, 10,588.88 and 4,315.68 is: 5,955.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,672.88 : 10,588.88 = 4,315.68 : x
  2. Step 2: Convert to fraction form
    7,672.88/10,588.88 = 4,315.68/x
  3. Step 3: Cross multiply
    7,672.88x = 10,588.88 × 4,315.68
  4. Step 4: Simplify right side
    7,672.88x = 45,698,228.43
  5. Step 5: Solve for x
    x = 45,698,228.43/7,672.88
  6. Step 6: Final answer
    x = 5,955.81

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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.