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Finding the Fourth Proportional to 116,785.62, 161,164.16 and 63,070.64

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Solution

The fourth proportional to 116,785.62, 161,164.16 and 63,070.64 is: 87,037.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,785.62 : 161,164.16 = 63,070.64 : x
  2. Step 2: Convert to fraction form
    116,785.62/161,164.16 = 63,070.64/x
  3. Step 3: Cross multiply
    116,785.62x = 161,164.16 × 63,070.64
  4. Step 4: Simplify right side
    116,785.62x = 10,164,727,276.85
  5. Step 5: Solve for x
    x = 10,164,727,276.85/116,785.62
  6. Step 6: Final answer
    x = 87,037.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.