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Finding the Fourth Proportional to 190,332.80, 285,499.20 and 172,836.80

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Solution

The fourth proportional to 190,332.80, 285,499.20 and 172,836.80 is: 259,255.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,332.80 : 285,499.20 = 172,836.80 : x
  2. Step 2: Convert to fraction form
    190,332.80/285,499.20 = 172,836.80/x
  3. Step 3: Cross multiply
    190,332.80x = 285,499.20 × 172,836.80
  4. Step 4: Simplify right side
    190,332.80x = 49,344,768,130.56
  5. Step 5: Solve for x
    x = 49,344,768,130.56/190,332.80
  6. Step 6: Final answer
    x = 259,255.20

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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.