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Finding the Fourth Proportional to 621,586.78, 932,287.78 and 172,260.79

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Solution

The fourth proportional to 621,586.78, 932,287.78 and 172,260.79 is: 258,365.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,586.78 : 932,287.78 = 172,260.79 : x
  2. Step 2: Convert to fraction form
    621,586.78/932,287.78 = 172,260.79/x
  3. Step 3: Cross multiply
    621,586.78x = 932,287.78 × 172,260.79
  4. Step 4: Simplify right side
    621,586.78x = 160,596,629,490.15
  5. Step 5: Solve for x
    x = 160,596,629,490.15/621,586.78
  6. Step 6: Final answer
    x = 258,365.58

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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.