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Finding the Fourth Proportional to 610,996.59, 916,276.19 and 211,530.11

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Solution

The fourth proportional to 610,996.59, 916,276.19 and 211,530.11 is: 317,219.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,996.59 : 916,276.19 = 211,530.11 : x
  2. Step 2: Convert to fraction form
    610,996.59/916,276.19 = 211,530.11/x
  3. Step 3: Cross multiply
    610,996.59x = 916,276.19 × 211,530.11
  4. Step 4: Simplify right side
    610,996.59x = 193,819,997,622.05
  5. Step 5: Solve for x
    x = 193,819,997,622.05/610,996.59
  6. Step 6: Final answer
    x = 317,219.44

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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.