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Finding the Fourth Proportional to 528,634.54, 729,504.77 and 299,187.71

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Solution

The fourth proportional to 528,634.54, 729,504.77 and 299,187.71 is: 412,872.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,634.54 : 729,504.77 = 299,187.71 : x
  2. Step 2: Convert to fraction form
    528,634.54/729,504.77 = 299,187.71/x
  3. Step 3: Cross multiply
    528,634.54x = 729,504.77 × 299,187.71
  4. Step 4: Simplify right side
    528,634.54x = 218,258,861,570.38
  5. Step 5: Solve for x
    x = 218,258,861,570.38/528,634.54
  6. Step 6: Final answer
    x = 412,872.87

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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.