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Finding the Fourth Proportional to 144,651.66, 216,603.63 and 99,811.32

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Solution

The fourth proportional to 144,651.66, 216,603.63 and 99,811.32 is: 149,459.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,651.66 : 216,603.63 = 99,811.32 : x
  2. Step 2: Convert to fraction form
    144,651.66/216,603.63 = 99,811.32/x
  3. Step 3: Cross multiply
    144,651.66x = 216,603.63 × 99,811.32
  4. Step 4: Simplify right side
    144,651.66x = 21,619,494,227.09
  5. Step 5: Solve for x
    x = 21,619,494,227.09/144,651.66
  6. Step 6: Final answer
    x = 149,459.01

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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.