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Finding the Fourth Proportional to 74,191.53, 102,383.96 and 40,657.53

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Solution

The fourth proportional to 74,191.53, 102,383.96 and 40,657.53 is: 56,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,191.53 : 102,383.96 = 40,657.53 : x
  2. Step 2: Convert to fraction form
    74,191.53/102,383.96 = 40,657.53/x
  3. Step 3: Cross multiply
    74,191.53x = 102,383.96 × 40,657.53
  4. Step 4: Simplify right side
    74,191.53x = 4,162,678,721.93
  5. Step 5: Solve for x
    x = 4,162,678,721.93/74,191.53
  6. Step 6: Final answer
    x = 56,107.20

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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.