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Finding the Fourth Proportional to 21,656.84, 32,503.28 and 21,492.81

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Solution

The fourth proportional to 21,656.84, 32,503.28 and 21,492.81 is: 32,257.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,656.84 : 32,503.28 = 21,492.81 : x
  2. Step 2: Convert to fraction form
    21,656.84/32,503.28 = 21,492.81/x
  3. Step 3: Cross multiply
    21,656.84x = 32,503.28 × 21,492.81
  4. Step 4: Simplify right side
    21,656.84x = 698,586,713.95
  5. Step 5: Solve for x
    x = 698,586,713.95/21,656.84
  6. Step 6: Final answer
    x = 32,257.10

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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.