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Finding the Fourth Proportional to 386,349.27, 579,517.71 and 105,866.52

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Solution

The fourth proportional to 386,349.27, 579,517.71 and 105,866.52 is: 158,798.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,349.27 : 579,517.71 = 105,866.52 : x
  2. Step 2: Convert to fraction form
    386,349.27/579,517.71 = 105,866.52/x
  3. Step 3: Cross multiply
    386,349.27x = 579,517.71 × 105,866.52
  4. Step 4: Simplify right side
    386,349.27x = 61,351,523,236.07
  5. Step 5: Solve for x
    x = 61,351,523,236.07/386,349.27
  6. Step 6: Final answer
    x = 158,798.08

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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.