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Finding the Fourth Proportional to 135,468.84, 186,948.50 and 75,040.41

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Solution

The fourth proportional to 135,468.84, 186,948.50 and 75,040.41 is: 103,556.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,468.84 : 186,948.50 = 75,040.41 : x
  2. Step 2: Convert to fraction form
    135,468.84/186,948.50 = 75,040.41/x
  3. Step 3: Cross multiply
    135,468.84x = 186,948.50 × 75,040.41
  4. Step 4: Simplify right side
    135,468.84x = 14,028,692,088.89
  5. Step 5: Solve for x
    x = 14,028,692,088.89/135,468.84
  6. Step 6: Final answer
    x = 103,556.60

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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.