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Finding the Fourth Proportional to 21,756.99, 32,630.93 and 10,652.50

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Solution

The fourth proportional to 21,756.99, 32,630.93 and 10,652.50 is: 15,976.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,756.99 : 32,630.93 = 10,652.50 : x
  2. Step 2: Convert to fraction form
    21,756.99/32,630.93 = 10,652.50/x
  3. Step 3: Cross multiply
    21,756.99x = 32,630.93 × 10,652.50
  4. Step 4: Simplify right side
    21,756.99x = 347,600,981.83
  5. Step 5: Solve for x
    x = 347,600,981.83/21,756.99
  6. Step 6: Final answer
    x = 15,976.52

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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.