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Finding the Fourth Proportional to 157,910.56, 217,910.04 and 93,421.60

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Solution

The fourth proportional to 157,910.56, 217,910.04 and 93,421.60 is: 128,917.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,910.56 : 217,910.04 = 93,421.60 : x
  2. Step 2: Convert to fraction form
    157,910.56/217,910.04 = 93,421.60/x
  3. Step 3: Cross multiply
    157,910.56x = 217,910.04 × 93,421.60
  4. Step 4: Simplify right side
    157,910.56x = 20,357,504,592.86
  5. Step 5: Solve for x
    x = 20,357,504,592.86/157,910.56
  6. Step 6: Final answer
    x = 128,917.94

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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.