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Finding the Fourth Proportional to 122,551.12, 183,752.88 and 55,070.80

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Solution

The fourth proportional to 122,551.12, 183,752.88 and 55,070.80 is: 82,573.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,551.12 : 183,752.88 = 55,070.80 : x
  2. Step 2: Convert to fraction form
    122,551.12/183,752.88 = 55,070.80/x
  3. Step 3: Cross multiply
    122,551.12x = 183,752.88 × 55,070.80
  4. Step 4: Simplify right side
    122,551.12x = 10,119,418,103.90
  5. Step 5: Solve for x
    x = 10,119,418,103.90/122,551.12
  6. Step 6: Final answer
    x = 82,573.04

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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.