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Finding the Fourth Proportional to 75,480.63, 103,983.24 and 52,777.14

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Solution

The fourth proportional to 75,480.63, 103,983.24 and 52,777.14 is: 72,706.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,480.63 : 103,983.24 = 52,777.14 : x
  2. Step 2: Convert to fraction form
    75,480.63/103,983.24 = 52,777.14/x
  3. Step 3: Cross multiply
    75,480.63x = 103,983.24 × 52,777.14
  4. Step 4: Simplify right side
    75,480.63x = 5,487,938,015.13
  5. Step 5: Solve for x
    x = 5,487,938,015.13/75,480.63
  6. Step 6: Final answer
    x = 72,706.57

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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.