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Finding the Fourth Proportional to 519,243.76, 716,592.40 and 289,845.74

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Solution

The fourth proportional to 519,243.76, 716,592.40 and 289,845.74 is: 400,007.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,243.76 : 716,592.40 = 289,845.74 : x
  2. Step 2: Convert to fraction form
    519,243.76/716,592.40 = 289,845.74/x
  3. Step 3: Cross multiply
    519,243.76x = 716,592.40 × 289,845.74
  4. Step 4: Simplify right side
    519,243.76x = 207,701,250,873.41
  5. Step 5: Solve for x
    x = 207,701,250,873.41/519,243.76
  6. Step 6: Final answer
    x = 400,007.22

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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.