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Finding the Fourth Proportional to 53,578.80, 73,940.50 and 29,707.70

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Solution

The fourth proportional to 53,578.80, 73,940.50 and 29,707.70 is: 40,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,578.80 : 73,940.50 = 29,707.70 : x
  2. Step 2: Convert to fraction form
    53,578.80/73,940.50 = 29,707.70/x
  3. Step 3: Cross multiply
    53,578.80x = 73,940.50 × 29,707.70
  4. Step 4: Simplify right side
    53,578.80x = 2,196,602,191.85
  5. Step 5: Solve for x
    x = 2,196,602,191.85/53,578.80
  6. Step 6: Final answer
    x = 40,997.60

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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.