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Finding the Fourth Proportional to 125,561.10, 188,341.65 and 115,938.30

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Solution

The fourth proportional to 125,561.10, 188,341.65 and 115,938.30 is: 173,907.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,561.10 : 188,341.65 = 115,938.30 : x
  2. Step 2: Convert to fraction form
    125,561.10/188,341.65 = 115,938.30/x
  3. Step 3: Cross multiply
    125,561.10x = 188,341.65 × 115,938.30
  4. Step 4: Simplify right side
    125,561.10x = 21,836,010,720.20
  5. Step 5: Solve for x
    x = 21,836,010,720.20/125,561.10
  6. Step 6: Final answer
    x = 173,907.45

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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.