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Finding the Fourth Proportional to 717,455.58, 990,051.33 and 445,517.65

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Solution

The fourth proportional to 717,455.58, 990,051.33 and 445,517.65 is: 614,791.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,455.58 : 990,051.33 = 445,517.65 : x
  2. Step 2: Convert to fraction form
    717,455.58/990,051.33 = 445,517.65/x
  3. Step 3: Cross multiply
    717,455.58x = 990,051.33 × 445,517.65
  4. Step 4: Simplify right side
    717,455.58x = 441,085,336,970.72
  5. Step 5: Solve for x
    x = 441,085,336,970.72/717,455.58
  6. Step 6: Final answer
    x = 614,791.14

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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.