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Finding the Fourth Proportional to 113,212.40, 169,818.60 and 65,973.20

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Solution

The fourth proportional to 113,212.40, 169,818.60 and 65,973.20 is: 98,959.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,212.40 : 169,818.60 = 65,973.20 : x
  2. Step 2: Convert to fraction form
    113,212.40/169,818.60 = 65,973.20/x
  3. Step 3: Cross multiply
    113,212.40x = 169,818.60 × 65,973.20
  4. Step 4: Simplify right side
    113,212.40x = 11,203,476,461.52
  5. Step 5: Solve for x
    x = 11,203,476,461.52/113,212.40
  6. Step 6: Final answer
    x = 98,959.80

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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.