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Finding the Fourth Proportional to 573,828.70, 861,071.10 and 219,097.30

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Solution

The fourth proportional to 573,828.70, 861,071.10 and 219,097.30 is: 328,771.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,828.70 : 861,071.10 = 219,097.30 : x
  2. Step 2: Convert to fraction form
    573,828.70/861,071.10 = 219,097.30/x
  3. Step 3: Cross multiply
    573,828.70x = 861,071.10 × 219,097.30
  4. Step 4: Simplify right side
    573,828.70x = 188,658,353,118.03
  5. Step 5: Solve for x
    x = 188,658,353,118.03/573,828.70
  6. Step 6: Final answer
    x = 328,771.20

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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.