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Finding the Fourth Proportional to 438,716.79, 605,441.59 and 247,758.89

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Solution

The fourth proportional to 438,716.79, 605,441.59 and 247,758.89 is: 341,914.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,716.79 : 605,441.59 = 247,758.89 : x
  2. Step 2: Convert to fraction form
    438,716.79/605,441.59 = 247,758.89/x
  3. Step 3: Cross multiply
    438,716.79x = 605,441.59 × 247,758.89
  4. Step 4: Simplify right side
    438,716.79x = 150,003,532,651.63
  5. Step 5: Solve for x
    x = 150,003,532,651.63/438,716.79
  6. Step 6: Final answer
    x = 341,914.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.