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Finding the Fourth Proportional to 92,285.80, 138,428.70 and 25,730.60

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Solution

The fourth proportional to 92,285.80, 138,428.70 and 25,730.60 is: 38,595.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,285.80 : 138,428.70 = 25,730.60 : x
  2. Step 2: Convert to fraction form
    92,285.80/138,428.70 = 25,730.60/x
  3. Step 3: Cross multiply
    92,285.80x = 138,428.70 × 25,730.60
  4. Step 4: Simplify right side
    92,285.80x = 3,561,853,508.22
  5. Step 5: Solve for x
    x = 3,561,853,508.22/92,285.80
  6. Step 6: Final answer
    x = 38,595.90

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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.