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Finding the Fourth Proportional to 49,376.40, 68,140.80 and 27,020.40

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Solution

The fourth proportional to 49,376.40, 68,140.80 and 27,020.40 is: 37,288.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,376.40 : 68,140.80 = 27,020.40 : x
  2. Step 2: Convert to fraction form
    49,376.40/68,140.80 = 27,020.40/x
  3. Step 3: Cross multiply
    49,376.40x = 68,140.80 × 27,020.40
  4. Step 4: Simplify right side
    49,376.40x = 1,841,191,672.32
  5. Step 5: Solve for x
    x = 1,841,191,672.32/49,376.40
  6. Step 6: Final answer
    x = 37,288.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.