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Finding the Fourth Proportional to 415,861.60, 623,792.40 and 166,722.40

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Solution

The fourth proportional to 415,861.60, 623,792.40 and 166,722.40 is: 250,083.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,861.60 : 623,792.40 = 166,722.40 : x
  2. Step 2: Convert to fraction form
    415,861.60/623,792.40 = 166,722.40/x
  3. Step 3: Cross multiply
    415,861.60x = 623,792.40 × 166,722.40
  4. Step 4: Simplify right side
    415,861.60x = 104,000,166,029.76
  5. Step 5: Solve for x
    x = 104,000,166,029.76/415,861.60
  6. Step 6: Final answer
    x = 250,083.60

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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.