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Finding the Fourth Proportional to 528,668.79, 729,563.67 and 286,951.41

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Solution

The fourth proportional to 528,668.79, 729,563.67 and 286,951.41 is: 395,993.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,668.79 : 729,563.67 = 286,951.41 : x
  2. Step 2: Convert to fraction form
    528,668.79/729,563.67 = 286,951.41/x
  3. Step 3: Cross multiply
    528,668.79x = 729,563.67 × 286,951.41
  4. Step 4: Simplify right side
    528,668.79x = 209,349,323,791.28
  5. Step 5: Solve for x
    x = 209,349,323,791.28/528,668.79
  6. Step 6: Final answer
    x = 395,993.35

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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.