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Finding the Fourth Proportional to 118,210.60, 177,315.90 and 114,930.10

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Solution

The fourth proportional to 118,210.60, 177,315.90 and 114,930.10 is: 172,395.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,210.60 : 177,315.90 = 114,930.10 : x
  2. Step 2: Convert to fraction form
    118,210.60/177,315.90 = 114,930.10/x
  3. Step 3: Cross multiply
    118,210.60x = 177,315.90 × 114,930.10
  4. Step 4: Simplify right side
    118,210.60x = 20,378,934,118.59
  5. Step 5: Solve for x
    x = 20,378,934,118.59/118,210.60
  6. Step 6: Final answer
    x = 172,395.15

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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.