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Finding the Fourth Proportional to 715,584.65, 987,524.93 and 393,302.93

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Solution

The fourth proportional to 715,584.65, 987,524.93 and 393,302.93 is: 542,768.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,584.65 : 987,524.93 = 393,302.93 : x
  2. Step 2: Convert to fraction form
    715,584.65/987,524.93 = 393,302.93/x
  3. Step 3: Cross multiply
    715,584.65x = 987,524.93 × 393,302.93
  4. Step 4: Simplify right side
    715,584.65x = 388,396,446,450.53
  5. Step 5: Solve for x
    x = 388,396,446,450.53/715,584.65
  6. Step 6: Final answer
    x = 542,768.00

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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.