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Finding the Fourth Proportional to 128,561.36, 192,836.40 and 35,066.80

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Solution

The fourth proportional to 128,561.36, 192,836.40 and 35,066.80 is: 52,598.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,561.36 : 192,836.40 = 35,066.80 : x
  2. Step 2: Convert to fraction form
    128,561.36/192,836.40 = 35,066.80/x
  3. Step 3: Cross multiply
    128,561.36x = 192,836.40 × 35,066.80
  4. Step 4: Simplify right side
    128,561.36x = 6,762,155,471.52
  5. Step 5: Solve for x
    x = 6,762,155,471.52/128,561.36
  6. Step 6: Final answer
    x = 52,598.66

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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.