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Finding the Fourth Proportional to 109,870.60, 164,805.90 and 92,763.40

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Solution

The fourth proportional to 109,870.60, 164,805.90 and 92,763.40 is: 139,145.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,870.60 : 164,805.90 = 92,763.40 : x
  2. Step 2: Convert to fraction form
    109,870.60/164,805.90 = 92,763.40/x
  3. Step 3: Cross multiply
    109,870.60x = 164,805.90 × 92,763.40
  4. Step 4: Simplify right side
    109,870.60x = 15,287,955,624.06
  5. Step 5: Solve for x
    x = 15,287,955,624.06/109,870.60
  6. Step 6: Final answer
    x = 139,145.10

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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.