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Finding the Fourth Proportional to 621,418.10, 929,794.35 and 411,466.10

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Solution

The fourth proportional to 621,418.10, 929,794.35 and 411,466.10 is: 615,654.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,418.10 : 929,794.35 = 411,466.10 : x
  2. Step 2: Convert to fraction form
    621,418.10/929,794.35 = 411,466.10/x
  3. Step 3: Cross multiply
    621,418.10x = 929,794.35 × 411,466.10
  4. Step 4: Simplify right side
    621,418.10x = 382,578,854,996.54
  5. Step 5: Solve for x
    x = 382,578,854,996.54/621,418.10
  6. Step 6: Final answer
    x = 615,654.51

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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.