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Finding the Fourth Proportional to 92,291.40, 138,418.20 and 25,714.80

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Solution

The fourth proportional to 92,291.40, 138,418.20 and 25,714.80 is: 38,566.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,291.40 : 138,418.20 = 25,714.80 : x
  2. Step 2: Convert to fraction form
    92,291.40/138,418.20 = 25,714.80/x
  3. Step 3: Cross multiply
    92,291.40x = 138,418.20 × 25,714.80
  4. Step 4: Simplify right side
    92,291.40x = 3,559,396,329.36
  5. Step 5: Solve for x
    x = 3,559,396,329.36/92,291.40
  6. Step 6: Final answer
    x = 38,566.93

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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.