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Finding the Fourth Proportional to 605,123.62, 907,783.92 and 178,702.56

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Solution

The fourth proportional to 605,123.62, 907,783.92 and 178,702.56 is: 268,082.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,123.62 : 907,783.92 = 178,702.56 : x
  2. Step 2: Convert to fraction form
    605,123.62/907,783.92 = 178,702.56/x
  3. Step 3: Cross multiply
    605,123.62x = 907,783.92 × 178,702.56
  4. Step 4: Simplify right side
    605,123.62x = 162,223,307,491.24
  5. Step 5: Solve for x
    x = 162,223,307,491.24/605,123.62
  6. Step 6: Final answer
    x = 268,082.92

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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.