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Finding the Fourth Proportional to 410,124.80, 615,187.20 and 401,830.40

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Solution

The fourth proportional to 410,124.80, 615,187.20 and 401,830.40 is: 602,745.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,124.80 : 615,187.20 = 401,830.40 : x
  2. Step 2: Convert to fraction form
    410,124.80/615,187.20 = 401,830.40/x
  3. Step 3: Cross multiply
    410,124.80x = 615,187.20 × 401,830.40
  4. Step 4: Simplify right side
    410,124.80x = 247,200,918,650.88
  5. Step 5: Solve for x
    x = 247,200,918,650.88/410,124.80
  6. Step 6: Final answer
    x = 602,745.60

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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.