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Finding the Fourth Proportional to 118,184, 177,276.16 and 115,209.60

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Solution

The fourth proportional to 118,184, 177,276.16 and 115,209.60 is: 172,814.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,184 : 177,276.16 = 115,209.60 : x
  2. Step 2: Convert to fraction form
    118,184/177,276.16 = 115,209.60/x
  3. Step 3: Cross multiply
    118,184x = 177,276.16 × 115,209.60
  4. Step 4: Simplify right side
    118,184x = 20,423,915,483.14
  5. Step 5: Solve for x
    x = 20,423,915,483.14/118,184
  6. Step 6: Final answer
    x = 172,814.56

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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.