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Finding the Fourth Proportional to 565,542.70, 848,306.64 and 139,082.21

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Solution

The fourth proportional to 565,542.70, 848,306.64 and 139,082.21 is: 208,621.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,542.70 : 848,306.64 = 139,082.21 : x
  2. Step 2: Convert to fraction form
    565,542.70/848,306.64 = 139,082.21/x
  3. Step 3: Cross multiply
    565,542.70x = 848,306.64 × 139,082.21
  4. Step 4: Simplify right side
    565,542.70x = 117,984,362,248.87
  5. Step 5: Solve for x
    x = 117,984,362,248.87/565,542.70
  6. Step 6: Final answer
    x = 208,621.49

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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.