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Finding the Fourth Proportional to 123,265.40, 170,106.93 and 68,820.03

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Solution

The fourth proportional to 123,265.40, 170,106.93 and 68,820.03 is: 94,972.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,265.40 : 170,106.93 = 68,820.03 : x
  2. Step 2: Convert to fraction form
    123,265.40/170,106.93 = 68,820.03/x
  3. Step 3: Cross multiply
    123,265.40x = 170,106.93 × 68,820.03
  4. Step 4: Simplify right side
    123,265.40x = 11,706,764,025.81
  5. Step 5: Solve for x
    x = 11,706,764,025.81/123,265.40
  6. Step 6: Final answer
    x = 94,972.02

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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.