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Finding the Fourth Proportional to 134,686.70, 185,859.30 and 74,254.22

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Solution

The fourth proportional to 134,686.70, 185,859.30 and 74,254.22 is: 102,466.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,686.70 : 185,859.30 = 74,254.22 : x
  2. Step 2: Convert to fraction form
    134,686.70/185,859.30 = 74,254.22/x
  3. Step 3: Cross multiply
    134,686.70x = 185,859.30 × 74,254.22
  4. Step 4: Simplify right side
    134,686.70x = 13,800,837,351.25
  5. Step 5: Solve for x
    x = 13,800,837,351.25/134,686.70
  6. Step 6: Final answer
    x = 102,466.22

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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.