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Finding the Fourth Proportional to 144,630.41, 216,571.80 and 99,790.03

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Solution

The fourth proportional to 144,630.41, 216,571.80 and 99,790.03 is: 149,427.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,630.41 : 216,571.80 = 99,790.03 : x
  2. Step 2: Convert to fraction form
    144,630.41/216,571.80 = 99,790.03/x
  3. Step 3: Cross multiply
    144,630.41x = 216,571.80 × 99,790.03
  4. Step 4: Simplify right side
    144,630.41x = 21,611,706,419.15
  5. Step 5: Solve for x
    x = 21,611,706,419.15/144,630.41
  6. Step 6: Final answer
    x = 149,427.13

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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.