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Finding the Fourth Proportional to 112,009.60, 167,668.80 and 65,123.20

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Solution

The fourth proportional to 112,009.60, 167,668.80 and 65,123.20 is: 97,483.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,009.60 : 167,668.80 = 65,123.20 : x
  2. Step 2: Convert to fraction form
    112,009.60/167,668.80 = 65,123.20/x
  3. Step 3: Cross multiply
    112,009.60x = 167,668.80 × 65,123.20
  4. Step 4: Simplify right side
    112,009.60x = 10,919,128,796.16
  5. Step 5: Solve for x
    x = 10,919,128,796.16/112,009.60
  6. Step 6: Final answer
    x = 97,483.87

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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.