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Finding the Fourth Proportional to 205,416.70, 308,125.05 and 57,672.70

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Solution

The fourth proportional to 205,416.70, 308,125.05 and 57,672.70 is: 86,509.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,416.70 : 308,125.05 = 57,672.70 : x
  2. Step 2: Convert to fraction form
    205,416.70/308,125.05 = 57,672.70/x
  3. Step 3: Cross multiply
    205,416.70x = 308,125.05 × 57,672.70
  4. Step 4: Simplify right side
    205,416.70x = 17,770,403,571.14
  5. Step 5: Solve for x
    x = 17,770,403,571.14/205,416.70
  6. Step 6: Final answer
    x = 86,509.05

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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.