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Finding the Fourth Proportional to 173,874.60, 260,909.10 and 74,017.80

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Solution

The fourth proportional to 173,874.60, 260,909.10 and 74,017.80 is: 111,068.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,874.60 : 260,909.10 = 74,017.80 : x
  2. Step 2: Convert to fraction form
    173,874.60/260,909.10 = 74,017.80/x
  3. Step 3: Cross multiply
    173,874.60x = 260,909.10 × 74,017.80
  4. Step 4: Simplify right side
    173,874.60x = 19,311,917,581.98
  5. Step 5: Solve for x
    x = 19,311,917,581.98/173,874.60
  6. Step 6: Final answer
    x = 111,068.08

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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.