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Finding the Fourth Proportional to 113,346.80, 169,874.40 and 68,926.40

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Solution

The fourth proportional to 113,346.80, 169,874.40 and 68,926.40 is: 103,300.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,346.80 : 169,874.40 = 68,926.40 : x
  2. Step 2: Convert to fraction form
    113,346.80/169,874.40 = 68,926.40/x
  3. Step 3: Cross multiply
    113,346.80x = 169,874.40 × 68,926.40
  4. Step 4: Simplify right side
    113,346.80x = 11,708,830,844.16
  5. Step 5: Solve for x
    x = 11,708,830,844.16/113,346.80
  6. Step 6: Final answer
    x = 103,300.94

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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.