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Finding the Fourth Proportional to 570,923.40, 856,385.10 and 171,625.80

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Solution

The fourth proportional to 570,923.40, 856,385.10 and 171,625.80 is: 257,438.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,923.40 : 856,385.10 = 171,625.80 : x
  2. Step 2: Convert to fraction form
    570,923.40/856,385.10 = 171,625.80/x
  3. Step 3: Cross multiply
    570,923.40x = 856,385.10 × 171,625.80
  4. Step 4: Simplify right side
    570,923.40x = 146,977,777,895.58
  5. Step 5: Solve for x
    x = 146,977,777,895.58/570,923.40
  6. Step 6: Final answer
    x = 257,438.70

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Similar ratio
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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.