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Finding the Fourth Proportional to 628,877.50, 868,390.37 and 608,541.71

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Solution

The fourth proportional to 628,877.50, 868,390.37 and 608,541.71 is: 840,309.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,877.50 : 868,390.37 = 608,541.71 : x
  2. Step 2: Convert to fraction form
    628,877.50/868,390.37 = 608,541.71/x
  3. Step 3: Cross multiply
    628,877.50x = 868,390.37 × 608,541.71
  4. Step 4: Simplify right side
    628,877.50x = 528,451,760,707.33
  5. Step 5: Solve for x
    x = 528,451,760,707.33/628,877.50
  6. Step 6: Final answer
    x = 840,309.54

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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.