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Finding the Fourth Proportional to 150,866.64, 208,237.85 and 86,372.01

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Solution

The fourth proportional to 150,866.64, 208,237.85 and 86,372.01 is: 119,217.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,866.64 : 208,237.85 = 86,372.01 : x
  2. Step 2: Convert to fraction form
    150,866.64/208,237.85 = 86,372.01/x
  3. Step 3: Cross multiply
    150,866.64x = 208,237.85 × 86,372.01
  4. Step 4: Simplify right side
    150,866.64x = 17,985,921,230.72
  5. Step 5: Solve for x
    x = 17,985,921,230.72/150,866.64
  6. Step 6: Final answer
    x = 119,217.35

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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.