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Finding the Fourth Proportional to 71,189.53, 98,237.63 and 39,356.53

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Solution

The fourth proportional to 71,189.53, 98,237.63 and 39,356.53 is: 54,309.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,189.53 : 98,237.63 = 39,356.53 : x
  2. Step 2: Convert to fraction form
    71,189.53/98,237.63 = 39,356.53/x
  3. Step 3: Cross multiply
    71,189.53x = 98,237.63 × 39,356.53
  4. Step 4: Simplify right side
    71,189.53x = 3,866,292,035.44
  5. Step 5: Solve for x
    x = 3,866,292,035.44/71,189.53
  6. Step 6: Final answer
    x = 54,309.84

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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.