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Finding the Fourth Proportional to 452,786.55, 679,203.08 and 115,830.12

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Solution

The fourth proportional to 452,786.55, 679,203.08 and 115,830.12 is: 173,751.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,786.55 : 679,203.08 = 115,830.12 : x
  2. Step 2: Convert to fraction form
    452,786.55/679,203.08 = 115,830.12/x
  3. Step 3: Cross multiply
    452,786.55x = 679,203.08 × 115,830.12
  4. Step 4: Simplify right side
    452,786.55x = 78,672,172,417.97
  5. Step 5: Solve for x
    x = 78,672,172,417.97/452,786.55
  6. Step 6: Final answer
    x = 173,751.13

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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.