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Finding the Fourth Proportional to 8,628.93, 12,955.28 and 6,875.01

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Solution

The fourth proportional to 8,628.93, 12,955.28 and 6,875.01 is: 10,321.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.93 : 12,955.28 = 6,875.01 : x
  2. Step 2: Convert to fraction form
    8,628.93/12,955.28 = 6,875.01/x
  3. Step 3: Cross multiply
    8,628.93x = 12,955.28 × 6,875.01
  4. Step 4: Simplify right side
    8,628.93x = 89,067,645.18
  5. Step 5: Solve for x
    x = 89,067,645.18/8,628.93
  6. Step 6: Final answer
    x = 10,321.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.