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Finding the Fourth Proportional to 394,857.80, 592,140.90 and 195,111.80

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Solution

The fourth proportional to 394,857.80, 592,140.90 and 195,111.80 is: 292,595.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,857.80 : 592,140.90 = 195,111.80 : x
  2. Step 2: Convert to fraction form
    394,857.80/592,140.90 = 195,111.80/x
  3. Step 3: Cross multiply
    394,857.80x = 592,140.90 × 195,111.80
  4. Step 4: Simplify right side
    394,857.80x = 115,533,676,852.62
  5. Step 5: Solve for x
    x = 115,533,676,852.62/394,857.80
  6. Step 6: Final answer
    x = 292,595.66

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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.