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Finding the Fourth Proportional to 124,796.40, 187,218.90 and 53,718.90

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Solution

The fourth proportional to 124,796.40, 187,218.90 and 53,718.90 is: 80,588.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,796.40 : 187,218.90 = 53,718.90 : x
  2. Step 2: Convert to fraction form
    124,796.40/187,218.90 = 53,718.90/x
  3. Step 3: Cross multiply
    124,796.40x = 187,218.90 × 53,718.90
  4. Step 4: Simplify right side
    124,796.40x = 10,057,193,367.21
  5. Step 5: Solve for x
    x = 10,057,193,367.21/124,796.40
  6. Step 6: Final answer
    x = 80,588.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.