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Finding the Fourth Proportional to 715,068.82, 985,986.30 and 456,605.92

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Solution

The fourth proportional to 715,068.82, 985,986.30 and 456,605.92 is: 629,599.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,068.82 : 985,986.30 = 456,605.92 : x
  2. Step 2: Convert to fraction form
    715,068.82/985,986.30 = 456,605.92/x
  3. Step 3: Cross multiply
    715,068.82x = 985,986.30 × 456,605.92
  4. Step 4: Simplify right side
    715,068.82x = 450,207,181,618.90
  5. Step 5: Solve for x
    x = 450,207,181,618.90/715,068.82
  6. Step 6: Final answer
    x = 629,599.79

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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.