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Finding the Fourth Proportional to 228,043.65, 314,698.13 and 126,075.45

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Solution

The fourth proportional to 228,043.65, 314,698.13 and 126,075.45 is: 173,982.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,043.65 : 314,698.13 = 126,075.45 : x
  2. Step 2: Convert to fraction form
    228,043.65/314,698.13 = 126,075.45/x
  3. Step 3: Cross multiply
    228,043.65x = 314,698.13 × 126,075.45
  4. Step 4: Simplify right side
    228,043.65x = 39,675,707,723.53
  5. Step 5: Solve for x
    x = 39,675,707,723.53/228,043.65
  6. Step 6: Final answer
    x = 173,982.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.