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Finding the Fourth Proportional to 109,063.68, 163,428.40 and 73,393.02

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Solution

The fourth proportional to 109,063.68, 163,428.40 and 73,393.02 is: 109,977.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,063.68 : 163,428.40 = 73,393.02 : x
  2. Step 2: Convert to fraction form
    109,063.68/163,428.40 = 73,393.02/x
  3. Step 3: Cross multiply
    109,063.68x = 163,428.40 × 73,393.02
  4. Step 4: Simplify right side
    109,063.68x = 11,994,503,829.77
  5. Step 5: Solve for x
    x = 11,994,503,829.77/109,063.68
  6. Step 6: Final answer
    x = 109,977.07

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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.