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Finding the Fourth Proportional to 570,105.33, 786,691.76 and 385,969.31

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Solution

The fourth proportional to 570,105.33, 786,691.76 and 385,969.31 is: 532,601.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,105.33 : 786,691.76 = 385,969.31 : x
  2. Step 2: Convert to fraction form
    570,105.33/786,691.76 = 385,969.31/x
  3. Step 3: Cross multiply
    570,105.33x = 786,691.76 × 385,969.31
  4. Step 4: Simplify right side
    570,105.33x = 303,638,869,926.58
  5. Step 5: Solve for x
    x = 303,638,869,926.58/570,105.33
  6. Step 6: Final answer
    x = 532,601.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.