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Finding the Fourth Proportional to 410,189.60, 615,399.60 and 199,834.40

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Solution

The fourth proportional to 410,189.60, 615,399.60 and 199,834.40 is: 299,807.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,189.60 : 615,399.60 = 199,834.40 : x
  2. Step 2: Convert to fraction form
    410,189.60/615,399.60 = 199,834.40/x
  3. Step 3: Cross multiply
    410,189.60x = 615,399.60 × 199,834.40
  4. Step 4: Simplify right side
    410,189.60x = 122,978,009,826.24
  5. Step 5: Solve for x
    x = 122,978,009,826.24/410,189.60
  6. Step 6: Final answer
    x = 299,807.72

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1.5x scale

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.