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Finding the Fourth Proportional to 220,070.74, 330,128.48 and 75,957.80

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Solution

The fourth proportional to 220,070.74, 330,128.48 and 75,957.80 is: 113,944.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,070.74 : 330,128.48 = 75,957.80 : x
  2. Step 2: Convert to fraction form
    220,070.74/330,128.48 = 75,957.80/x
  3. Step 3: Cross multiply
    220,070.74x = 330,128.48 × 75,957.80
  4. Step 4: Simplify right side
    220,070.74x = 25,075,832,678.36
  5. Step 5: Solve for x
    x = 25,075,832,678.36/220,070.74
  6. Step 6: Final answer
    x = 113,944.42

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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.