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Finding the Fourth Proportional to 611,219.70, 916,916.90 and 190,528.38

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Solution

The fourth proportional to 611,219.70, 916,916.90 and 190,528.38 is: 285,819.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,219.70 : 916,916.90 = 190,528.38 : x
  2. Step 2: Convert to fraction form
    611,219.70/916,916.90 = 190,528.38/x
  3. Step 3: Cross multiply
    611,219.70x = 916,916.90 × 190,528.38
  4. Step 4: Simplify right side
    611,219.70x = 174,698,690,598.98
  5. Step 5: Solve for x
    x = 174,698,690,598.98/611,219.70
  6. Step 6: Final answer
    x = 285,819.80

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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.