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Finding the Fourth Proportional to 113,090.40, 169,719.84 and 43,106.40

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Solution

The fourth proportional to 113,090.40, 169,719.84 and 43,106.40 is: 64,691.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,090.40 : 169,719.84 = 43,106.40 : x
  2. Step 2: Convert to fraction form
    113,090.40/169,719.84 = 43,106.40/x
  3. Step 3: Cross multiply
    113,090.40x = 169,719.84 × 43,106.40
  4. Step 4: Simplify right side
    113,090.40x = 7,316,011,310.98
  5. Step 5: Solve for x
    x = 7,316,011,310.98/113,090.40
  6. Step 6: Final answer
    x = 64,691.71

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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.