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Finding the Fourth Proportional to 157,581.09, 217,480.01 and 87,737.49

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Solution

The fourth proportional to 157,581.09, 217,480.01 and 87,737.49 is: 121,087.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,581.09 : 217,480.01 = 87,737.49 : x
  2. Step 2: Convert to fraction form
    157,581.09/217,480.01 = 87,737.49/x
  3. Step 3: Cross multiply
    157,581.09x = 217,480.01 × 87,737.49
  4. Step 4: Simplify right side
    157,581.09x = 19,081,149,763.89
  5. Step 5: Solve for x
    x = 19,081,149,763.89/157,581.09
  6. Step 6: Final answer
    x = 121,087.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.