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Finding the Fourth Proportional to 92,028.80, 138,043.20 and 62,285.60

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Solution

The fourth proportional to 92,028.80, 138,043.20 and 62,285.60 is: 93,428.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,028.80 : 138,043.20 = 62,285.60 : x
  2. Step 2: Convert to fraction form
    92,028.80/138,043.20 = 62,285.60/x
  3. Step 3: Cross multiply
    92,028.80x = 138,043.20 × 62,285.60
  4. Step 4: Simplify right side
    92,028.80x = 8,598,103,537.92
  5. Step 5: Solve for x
    x = 8,598,103,537.92/92,028.80
  6. Step 6: Final answer
    x = 93,428.40

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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.