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Finding the Fourth Proportional to 192,076.90, 288,443.40 and 125,810.80

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Solution

The fourth proportional to 192,076.90, 288,443.40 and 125,810.80 is: 188,931.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,076.90 : 288,443.40 = 125,810.80 : x
  2. Step 2: Convert to fraction form
    192,076.90/288,443.40 = 125,810.80/x
  3. Step 3: Cross multiply
    192,076.90x = 288,443.40 × 125,810.80
  4. Step 4: Simplify right side
    192,076.90x = 36,289,294,908.72
  5. Step 5: Solve for x
    x = 36,289,294,908.72/192,076.90
  6. Step 6: Final answer
    x = 188,931.07

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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.