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Finding the Fourth Proportional to 209,101.44, 313,809.89 and 96,860.40

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Solution

The fourth proportional to 209,101.44, 313,809.89 and 96,860.40 is: 145,363.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,101.44 : 313,809.89 = 96,860.40 : x
  2. Step 2: Convert to fraction form
    209,101.44/313,809.89 = 96,860.40/x
  3. Step 3: Cross multiply
    209,101.44x = 313,809.89 × 96,860.40
  4. Step 4: Simplify right side
    209,101.44x = 30,395,750,985.05
  5. Step 5: Solve for x
    x = 30,395,750,985.05/209,101.44
  6. Step 6: Final answer
    x = 145,363.66

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1.5x scale

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.