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Finding the Fourth Proportional to 108,770.99, 163,137.02 and 69,210.59

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Solution

The fourth proportional to 108,770.99, 163,137.02 and 69,210.59 is: 103,803.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,770.99 : 163,137.02 = 69,210.59 : x
  2. Step 2: Convert to fraction form
    108,770.99/163,137.02 = 69,210.59/x
  3. Step 3: Cross multiply
    108,770.99x = 163,137.02 × 69,210.59
  4. Step 4: Simplify right side
    108,770.99x = 11,290,808,243.30
  5. Step 5: Solve for x
    x = 11,290,808,243.30/108,770.99
  6. Step 6: Final answer
    x = 103,803.49

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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.