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Finding the Fourth Proportional to 353,492.70, 530,170.60 and 137,351.06

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Solution

The fourth proportional to 353,492.70, 530,170.60 and 137,351.06 is: 205,999.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,492.70 : 530,170.60 = 137,351.06 : x
  2. Step 2: Convert to fraction form
    353,492.70/530,170.60 = 137,351.06/x
  3. Step 3: Cross multiply
    353,492.70x = 530,170.60 × 137,351.06
  4. Step 4: Simplify right side
    353,492.70x = 72,819,490,553.23
  5. Step 5: Solve for x
    x = 72,819,490,553.23/353,492.70
  6. Step 6: Final answer
    x = 205,999.98

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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.