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Finding the Fourth Proportional to 134,886.98, 186,142.98 and 74,457.64

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Solution

The fourth proportional to 134,886.98, 186,142.98 and 74,457.64 is: 102,750.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,886.98 : 186,142.98 = 74,457.64 : x
  2. Step 2: Convert to fraction form
    134,886.98/186,142.98 = 74,457.64/x
  3. Step 3: Cross multiply
    134,886.98x = 186,142.98 × 74,457.64
  4. Step 4: Simplify right side
    134,886.98x = 13,859,766,993.37
  5. Step 5: Solve for x
    x = 13,859,766,993.37/134,886.98
  6. Step 6: Final answer
    x = 102,750.96

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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.