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Finding the Fourth Proportional to 172,069.80, 257,586.30 and 153,407.40

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Solution

The fourth proportional to 172,069.80, 257,586.30 and 153,407.40 is: 229,648.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,069.80 : 257,586.30 = 153,407.40 : x
  2. Step 2: Convert to fraction form
    172,069.80/257,586.30 = 153,407.40/x
  3. Step 3: Cross multiply
    172,069.80x = 257,586.30 × 153,407.40
  4. Step 4: Simplify right side
    172,069.80x = 39,515,644,558.62
  5. Step 5: Solve for x
    x = 39,515,644,558.62/172,069.80
  6. Step 6: Final answer
    x = 229,648.92

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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.