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Finding the Fourth Proportional to 104,537.61, 156,713.46 and 45,340.98

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Solution

The fourth proportional to 104,537.61, 156,713.46 and 45,340.98 is: 67,971.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,537.61 : 156,713.46 = 45,340.98 : x
  2. Step 2: Convert to fraction form
    104,537.61/156,713.46 = 45,340.98/x
  3. Step 3: Cross multiply
    104,537.61x = 156,713.46 × 45,340.98
  4. Step 4: Simplify right side
    104,537.61x = 7,105,541,855.59
  5. Step 5: Solve for x
    x = 7,105,541,855.59/104,537.61
  6. Step 6: Final answer
    x = 67,971.15

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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.