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Finding the Fourth Proportional to 531,752.10, 797,123.61 and 212,100.54

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Solution

The fourth proportional to 531,752.10, 797,123.61 and 212,100.54 is: 317,949.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,752.10 : 797,123.61 = 212,100.54 : x
  2. Step 2: Convert to fraction form
    531,752.10/797,123.61 = 212,100.54/x
  3. Step 3: Cross multiply
    531,752.10x = 797,123.61 × 212,100.54
  4. Step 4: Simplify right side
    531,752.10x = 169,070,348,127.75
  5. Step 5: Solve for x
    x = 169,070,348,127.75/531,752.10
  6. Step 6: Final answer
    x = 317,949.56

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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.