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Finding the Fourth Proportional to 172,246.88, 258,143.52 and 92,275.58

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Solution

The fourth proportional to 172,246.88, 258,143.52 and 92,275.58 is: 138,291.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,246.88 : 258,143.52 = 92,275.58 : x
  2. Step 2: Convert to fraction form
    172,246.88/258,143.52 = 92,275.58/x
  3. Step 3: Cross multiply
    172,246.88x = 258,143.52 × 92,275.58
  4. Step 4: Simplify right side
    172,246.88x = 23,820,343,031.24
  5. Step 5: Solve for x
    x = 23,820,343,031.24/172,246.88
  6. Step 6: Final answer
    x = 138,291.87

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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.