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Finding the Fourth Proportional to 315,711.14, 473,271.47 and 115,977.90

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Solution

The fourth proportional to 315,711.14, 473,271.47 and 115,977.90 is: 173,858.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,711.14 : 473,271.47 = 115,977.90 : x
  2. Step 2: Convert to fraction form
    315,711.14/473,271.47 = 115,977.90/x
  3. Step 3: Cross multiply
    315,711.14x = 473,271.47 × 115,977.90
  4. Step 4: Simplify right side
    315,711.14x = 54,889,030,640.62
  5. Step 5: Solve for x
    x = 54,889,030,640.62/315,711.14
  6. Step 6: Final answer
    x = 173,858.39

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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.