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Finding the Fourth Proportional to 309,412.74, 463,759.90 and 117,164.91

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Solution

The fourth proportional to 309,412.74, 463,759.90 and 117,164.91 is: 175,611.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,412.74 : 463,759.90 = 117,164.91 : x
  2. Step 2: Convert to fraction form
    309,412.74/463,759.90 = 117,164.91/x
  3. Step 3: Cross multiply
    309,412.74x = 463,759.90 × 117,164.91
  4. Step 4: Simplify right side
    309,412.74x = 54,336,386,945.11
  5. Step 5: Solve for x
    x = 54,336,386,945.11/309,412.74
  6. Step 6: Final answer
    x = 175,611.34

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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.