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Finding the Fourth Proportional to 104,099.80, 156,005.70 and 83,075.80

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Solution

The fourth proportional to 104,099.80, 156,005.70 and 83,075.80 is: 124,498.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,099.80 : 156,005.70 = 83,075.80 : x
  2. Step 2: Convert to fraction form
    104,099.80/156,005.70 = 83,075.80/x
  3. Step 3: Cross multiply
    104,099.80x = 156,005.70 × 83,075.80
  4. Step 4: Simplify right side
    104,099.80x = 12,960,298,332.06
  5. Step 5: Solve for x
    x = 12,960,298,332.06/104,099.80
  6. Step 6: Final answer
    x = 124,498.78

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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.