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Finding the Fourth Proportional to 519,177.53, 716,500.96 and 289,779.57

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Solution

The fourth proportional to 519,177.53, 716,500.96 and 289,779.57 is: 399,915.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,177.53 : 716,500.96 = 289,779.57 : x
  2. Step 2: Convert to fraction form
    519,177.53/716,500.96 = 289,779.57/x
  3. Step 3: Cross multiply
    519,177.53x = 716,500.96 × 289,779.57
  4. Step 4: Simplify right side
    519,177.53x = 207,627,340,987.76
  5. Step 5: Solve for x
    x = 207,627,340,987.76/519,177.53
  6. Step 6: Final answer
    x = 399,915.88

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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.