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Finding the Fourth Proportional to 621,858.40, 932,787.60 and 497,442.40

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Solution

The fourth proportional to 621,858.40, 932,787.60 and 497,442.40 is: 746,163.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,858.40 : 932,787.60 = 497,442.40 : x
  2. Step 2: Convert to fraction form
    621,858.40/932,787.60 = 497,442.40/x
  3. Step 3: Cross multiply
    621,858.40x = 932,787.60 × 497,442.40
  4. Step 4: Simplify right side
    621,858.40x = 464,008,102,434.24
  5. Step 5: Solve for x
    x = 464,008,102,434.24/621,858.40
  6. Step 6: Final answer
    x = 746,163.60

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Double scale
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Similar ratio
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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.