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Finding the Fourth Proportional to 113,090.50, 169,713.52 and 39,218.50

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Solution

The fourth proportional to 113,090.50, 169,713.52 and 39,218.50 is: 58,854.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,090.50 : 169,713.52 = 39,218.50 : x
  2. Step 2: Convert to fraction form
    113,090.50/169,713.52 = 39,218.50/x
  3. Step 3: Cross multiply
    113,090.50x = 169,713.52 × 39,218.50
  4. Step 4: Simplify right side
    113,090.50x = 6,655,909,684.12
  5. Step 5: Solve for x
    x = 6,655,909,684.12/113,090.50
  6. Step 6: Final answer
    x = 58,854.72

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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.