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Finding the Fourth Proportional to 718,994.14, 992,571.45 and 447,149.60

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Solution

The fourth proportional to 718,994.14, 992,571.45 and 447,149.60 is: 617,290.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,994.14 : 992,571.45 = 447,149.60 : x
  2. Step 2: Convert to fraction form
    718,994.14/992,571.45 = 447,149.60/x
  3. Step 3: Cross multiply
    718,994.14x = 992,571.45 × 447,149.60
  4. Step 4: Simplify right side
    718,994.14x = 443,827,926,436.61
  5. Step 5: Solve for x
    x = 443,827,926,436.61/718,994.14
  6. Step 6: Final answer
    x = 617,290.05

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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.