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Finding the Fourth Proportional to 313,900.80, 432,988.72 and 273,711.04

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Solution

The fourth proportional to 313,900.80, 432,988.72 and 273,711.04 is: 377,551.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,900.80 : 432,988.72 = 273,711.04 : x
  2. Step 2: Convert to fraction form
    313,900.80/432,988.72 = 273,711.04/x
  3. Step 3: Cross multiply
    313,900.80x = 432,988.72 × 273,711.04
  4. Step 4: Simplify right side
    313,900.80x = 118,513,792,859.47
  5. Step 5: Solve for x
    x = 118,513,792,859.47/313,900.80
  6. Step 6: Final answer
    x = 377,551.74

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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.