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Finding the Fourth Proportional to 108,935.80, 163,403.70 and 95,813.80

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Solution

The fourth proportional to 108,935.80, 163,403.70 and 95,813.80 is: 143,720.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,935.80 : 163,403.70 = 95,813.80 : x
  2. Step 2: Convert to fraction form
    108,935.80/163,403.70 = 95,813.80/x
  3. Step 3: Cross multiply
    108,935.80x = 163,403.70 × 95,813.80
  4. Step 4: Simplify right side
    108,935.80x = 15,656,329,431.06
  5. Step 5: Solve for x
    x = 15,656,329,431.06/108,935.80
  6. Step 6: Final answer
    x = 143,720.70

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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.