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Finding the Fourth Proportional to 104,656.40, 156,981.10 and 45,492.08

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Solution

The fourth proportional to 104,656.40, 156,981.10 and 45,492.08 is: 68,236.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,656.40 : 156,981.10 = 45,492.08 : x
  2. Step 2: Convert to fraction form
    104,656.40/156,981.10 = 45,492.08/x
  3. Step 3: Cross multiply
    104,656.40x = 156,981.10 × 45,492.08
  4. Step 4: Simplify right side
    104,656.40x = 7,141,396,759.69
  5. Step 5: Solve for x
    x = 7,141,396,759.69/104,656.40
  6. Step 6: Final answer
    x = 68,236.60

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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.