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Finding the Fourth Proportional to 21,900.93, 32,875.97 and 8,762.46

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Solution

The fourth proportional to 21,900.93, 32,875.97 and 8,762.46 is: 13,153.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,900.93 : 32,875.97 = 8,762.46 : x
  2. Step 2: Convert to fraction form
    21,900.93/32,875.97 = 8,762.46/x
  3. Step 3: Cross multiply
    21,900.93x = 32,875.97 × 8,762.46
  4. Step 4: Simplify right side
    21,900.93x = 288,074,328.27
  5. Step 5: Solve for x
    x = 288,074,328.27/21,900.93
  6. Step 6: Final answer
    x = 13,153.52

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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.