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Finding the Fourth Proportional to 104,499.30, 156,748.95 and 55,347.30

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Solution

The fourth proportional to 104,499.30, 156,748.95 and 55,347.30 is: 83,020.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,499.30 : 156,748.95 = 55,347.30 : x
  2. Step 2: Convert to fraction form
    104,499.30/156,748.95 = 55,347.30/x
  3. Step 3: Cross multiply
    104,499.30x = 156,748.95 × 55,347.30
  4. Step 4: Simplify right side
    104,499.30x = 8,675,631,160.34
  5. Step 5: Solve for x
    x = 8,675,631,160.34/104,499.30
  6. Step 6: Final answer
    x = 83,020.95

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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.