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Finding the Fourth Proportional to 527,288.67, 727,658.94 and 285,571.51

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Solution

The fourth proportional to 527,288.67, 727,658.94 and 285,571.51 is: 394,088.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,288.67 : 727,658.94 = 285,571.51 : x
  2. Step 2: Convert to fraction form
    527,288.67/727,658.94 = 285,571.51/x
  3. Step 3: Cross multiply
    527,288.67x = 727,658.94 × 285,571.51
  4. Step 4: Simplify right side
    527,288.67x = 207,798,660,441.65
  5. Step 5: Solve for x
    x = 207,798,660,441.65/527,288.67
  6. Step 6: Final answer
    x = 394,088.99

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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.