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Finding the Fourth Proportional to 102,204.80, 153,307.20 and 49,716.80

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Solution

The fourth proportional to 102,204.80, 153,307.20 and 49,716.80 is: 74,575.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,204.80 : 153,307.20 = 49,716.80 : x
  2. Step 2: Convert to fraction form
    102,204.80/153,307.20 = 49,716.80/x
  3. Step 3: Cross multiply
    102,204.80x = 153,307.20 × 49,716.80
  4. Step 4: Simplify right side
    102,204.80x = 7,621,943,400.96
  5. Step 5: Solve for x
    x = 7,621,943,400.96/102,204.80
  6. Step 6: Final answer
    x = 74,575.20

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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.