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Finding the Fourth Proportional to 118,395, 177,680.16 and 56,065.68

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Solution

The fourth proportional to 118,395, 177,680.16 and 56,065.68 is: 84,140.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,395 : 177,680.16 = 56,065.68 : x
  2. Step 2: Convert to fraction form
    118,395/177,680.16 = 56,065.68/x
  3. Step 3: Cross multiply
    118,395x = 177,680.16 × 56,065.68
  4. Step 4: Simplify right side
    118,395x = 9,961,758,992.91
  5. Step 5: Solve for x
    x = 9,961,758,992.91/118,395
  6. Step 6: Final answer
    x = 84,140.03

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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.