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Finding the Fourth Proportional to 10,689.21, 14,750.87 and 5,973.93

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Solution

The fourth proportional to 10,689.21, 14,750.87 and 5,973.93 is: 8,243.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,689.21 : 14,750.87 = 5,973.93 : x
  2. Step 2: Convert to fraction form
    10,689.21/14,750.87 = 5,973.93/x
  3. Step 3: Cross multiply
    10,689.21x = 14,750.87 × 5,973.93
  4. Step 4: Simplify right side
    10,689.21x = 88,120,634.95
  5. Step 5: Solve for x
    x = 88,120,634.95/10,689.21
  6. Step 6: Final answer
    x = 8,243.89

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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.