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Finding the Fourth Proportional to 519,426.70, 716,806.11 and 289,970.62

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Solution

The fourth proportional to 519,426.70, 716,806.11 and 289,970.62 is: 400,157.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,426.70 : 716,806.11 = 289,970.62 : x
  2. Step 2: Convert to fraction form
    519,426.70/716,806.11 = 289,970.62/x
  3. Step 3: Cross multiply
    519,426.70x = 716,806.11 × 289,970.62
  4. Step 4: Simplify right side
    519,426.70x = 207,852,712,136.49
  5. Step 5: Solve for x
    x = 207,852,712,136.49/519,426.70
  6. Step 6: Final answer
    x = 400,157.93

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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.