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Finding the Fourth Proportional to 21,792.63, 32,688.95 and 5,376.63

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Solution

The fourth proportional to 21,792.63, 32,688.95 and 5,376.63 is: 8,064.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,792.63 : 32,688.95 = 5,376.63 : x
  2. Step 2: Convert to fraction form
    21,792.63/32,688.95 = 5,376.63/x
  3. Step 3: Cross multiply
    21,792.63x = 32,688.95 × 5,376.63
  4. Step 4: Simplify right side
    21,792.63x = 175,756,389.24
  5. Step 5: Solve for x
    x = 175,756,389.24/21,792.63
  6. Step 6: Final answer
    x = 8,064.95

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1.5x scale

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.