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Finding the Fourth Proportional to 621,252.44, 931,774.86 and 172,018.72

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Solution

The fourth proportional to 621,252.44, 931,774.86 and 172,018.72 is: 257,999.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,252.44 : 931,774.86 = 172,018.72 : x
  2. Step 2: Convert to fraction form
    621,252.44/931,774.86 = 172,018.72/x
  3. Step 3: Cross multiply
    621,252.44x = 931,774.86 × 172,018.72
  4. Step 4: Simplify right side
    621,252.44x = 160,282,718,745.38
  5. Step 5: Solve for x
    x = 160,282,718,745.38/621,252.44
  6. Step 6: Final answer
    x = 257,999.34

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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.