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Finding the Fourth Proportional to 621,509.66, 932,261.82 and 172,229.23

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Solution

The fourth proportional to 621,509.66, 932,261.82 and 172,229.23 is: 258,343.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,509.66 : 932,261.82 = 172,229.23 : x
  2. Step 2: Convert to fraction form
    621,509.66/932,261.82 = 172,229.23/x
  3. Step 3: Cross multiply
    621,509.66x = 932,261.82 × 172,229.23
  4. Step 4: Simplify right side
    621,509.66x = 160,562,735,417.00
  5. Step 5: Solve for x
    x = 160,562,735,417.00/621,509.66
  6. Step 6: Final answer
    x = 258,343.11

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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.