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Finding the Fourth Proportional to 621,451.60, 929,844.60 and 411,499.60

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Solution

The fourth proportional to 621,451.60, 929,844.60 and 411,499.60 is: 615,704.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,451.60 : 929,844.60 = 411,499.60 : x
  2. Step 2: Convert to fraction form
    621,451.60/929,844.60 = 411,499.60/x
  3. Step 3: Cross multiply
    621,451.60x = 929,844.60 × 411,499.60
  4. Step 4: Simplify right side
    621,451.60x = 382,630,680,962.16
  5. Step 5: Solve for x
    x = 382,630,680,962.16/621,451.60
  6. Step 6: Final answer
    x = 615,704.72

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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.