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Finding the Fourth Proportional to 535,485.40, 801,672.90 and 519,933.40

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Solution

The fourth proportional to 535,485.40, 801,672.90 and 519,933.40 is: 778,390.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,485.40 : 801,672.90 = 519,933.40 : x
  2. Step 2: Convert to fraction form
    535,485.40/801,672.90 = 519,933.40/x
  3. Step 3: Cross multiply
    535,485.40x = 801,672.90 × 519,933.40
  4. Step 4: Simplify right side
    535,485.40x = 416,816,516,584.86
  5. Step 5: Solve for x
    x = 416,816,516,584.86/535,485.40
  6. Step 6: Final answer
    x = 778,390.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.