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Finding the Fourth Proportional to 187,728.80, 259,064.22 and 101,685.80

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Solution

The fourth proportional to 187,728.80, 259,064.22 and 101,685.80 is: 140,325.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,728.80 : 259,064.22 = 101,685.80 : x
  2. Step 2: Convert to fraction form
    187,728.80/259,064.22 = 101,685.80/x
  3. Step 3: Cross multiply
    187,728.80x = 259,064.22 × 101,685.80
  4. Step 4: Simplify right side
    187,728.80x = 26,343,152,462.08
  5. Step 5: Solve for x
    x = 26,343,152,462.08/187,728.80
  6. Step 6: Final answer
    x = 140,325.58

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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.