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Finding the Fourth Proportional to 572,658.45, 859,098.35 and 217,644.79

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Solution

The fourth proportional to 572,658.45, 859,098.35 and 217,644.79 is: 326,509.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,658.45 : 859,098.35 = 217,644.79 : x
  2. Step 2: Convert to fraction form
    572,658.45/859,098.35 = 217,644.79/x
  3. Step 3: Cross multiply
    572,658.45x = 859,098.35 × 217,644.79
  4. Step 4: Simplify right side
    572,658.45x = 186,978,279,975.10
  5. Step 5: Solve for x
    x = 186,978,279,975.10/572,658.45
  6. Step 6: Final answer
    x = 326,509.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.