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Finding the Fourth Proportional to 96,609.40, 144,914.10 and 87,861.40

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Solution

The fourth proportional to 96,609.40, 144,914.10 and 87,861.40 is: 131,792.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,609.40 : 144,914.10 = 87,861.40 : x
  2. Step 2: Convert to fraction form
    96,609.40/144,914.10 = 87,861.40/x
  3. Step 3: Cross multiply
    96,609.40x = 144,914.10 × 87,861.40
  4. Step 4: Simplify right side
    96,609.40x = 12,732,355,705.74
  5. Step 5: Solve for x
    x = 12,732,355,705.74/96,609.40
  6. Step 6: Final answer
    x = 131,792.10

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1.5x scale

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.