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Finding the Fourth Proportional to 104,699.70, 144,446.40 and 61,652.88

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Solution

The fourth proportional to 104,699.70, 144,446.40 and 61,652.88 is: 85,057.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,699.70 : 144,446.40 = 61,652.88 : x
  2. Step 2: Convert to fraction form
    104,699.70/144,446.40 = 61,652.88/x
  3. Step 3: Cross multiply
    104,699.70x = 144,446.40 × 61,652.88
  4. Step 4: Simplify right side
    104,699.70x = 8,905,536,565.63
  5. Step 5: Solve for x
    x = 8,905,536,565.63/104,699.70
  6. Step 6: Final answer
    x = 85,057.90

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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.