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Finding the Fourth Proportional to 475,249.60, 713,066.40 and 209,060.80

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Solution

The fourth proportional to 475,249.60, 713,066.40 and 209,060.80 is: 313,675.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,249.60 : 713,066.40 = 209,060.80 : x
  2. Step 2: Convert to fraction form
    475,249.60/713,066.40 = 209,060.80/x
  3. Step 3: Cross multiply
    475,249.60x = 713,066.40 × 209,060.80
  4. Step 4: Simplify right side
    475,249.60x = 149,074,232,037.12
  5. Step 5: Solve for x
    x = 149,074,232,037.12/475,249.60
  6. Step 6: Final answer
    x = 313,675.66

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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.