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Finding the Fourth Proportional to 172,040.60, 257,550.60 and 127,863.20

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Solution

The fourth proportional to 172,040.60, 257,550.60 and 127,863.20 is: 191,415.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,040.60 : 257,550.60 = 127,863.20 : x
  2. Step 2: Convert to fraction form
    172,040.60/257,550.60 = 127,863.20/x
  3. Step 3: Cross multiply
    172,040.60x = 257,550.60 × 127,863.20
  4. Step 4: Simplify right side
    172,040.60x = 32,931,243,877.92
  5. Step 5: Solve for x
    x = 32,931,243,877.92/172,040.60
  6. Step 6: Final answer
    x = 191,415.54

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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.