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Finding the Fourth Proportional to 60,669.78, 91,004.55 and 18,549.99

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Solution

The fourth proportional to 60,669.78, 91,004.55 and 18,549.99 is: 27,824.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,669.78 : 91,004.55 = 18,549.99 : x
  2. Step 2: Convert to fraction form
    60,669.78/91,004.55 = 18,549.99/x
  3. Step 3: Cross multiply
    60,669.78x = 91,004.55 × 18,549.99
  4. Step 4: Simplify right side
    60,669.78x = 1,688,133,492.45
  5. Step 5: Solve for x
    x = 1,688,133,492.45/60,669.78
  6. Step 6: Final answer
    x = 27,824.95

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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.