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Finding the Fourth Proportional to 173,660.80, 260,053.80 and 138,668.80

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Solution

The fourth proportional to 173,660.80, 260,053.80 and 138,668.80 is: 207,653.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,660.80 : 260,053.80 = 138,668.80 : x
  2. Step 2: Convert to fraction form
    173,660.80/260,053.80 = 138,668.80/x
  3. Step 3: Cross multiply
    173,660.80x = 260,053.80 × 138,668.80
  4. Step 4: Simplify right side
    173,660.80x = 36,061,348,381.44
  5. Step 5: Solve for x
    x = 36,061,348,381.44/173,660.80
  6. Step 6: Final answer
    x = 207,653.93

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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.