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Finding the Fourth Proportional to 621,511.54, 932,264.64 and 172,231.12

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Solution

The fourth proportional to 621,511.54, 932,264.64 and 172,231.12 is: 258,345.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,511.54 : 932,264.64 = 172,231.12 : x
  2. Step 2: Convert to fraction form
    621,511.54/932,264.64 = 172,231.12/x
  3. Step 3: Cross multiply
    621,511.54x = 932,264.64 × 172,231.12
  4. Step 4: Simplify right side
    621,511.54x = 160,564,978,422.27
  5. Step 5: Solve for x
    x = 160,564,978,422.27/621,511.54
  6. Step 6: Final answer
    x = 258,345.93

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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.