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Finding the Fourth Proportional to 622,674.80, 934,012.20 and 307,746.80

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Solution

The fourth proportional to 622,674.80, 934,012.20 and 307,746.80 is: 461,620.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,674.80 : 934,012.20 = 307,746.80 : x
  2. Step 2: Convert to fraction form
    622,674.80/934,012.20 = 307,746.80/x
  3. Step 3: Cross multiply
    622,674.80x = 934,012.20 × 307,746.80
  4. Step 4: Simplify right side
    622,674.80x = 287,439,265,710.96
  5. Step 5: Solve for x
    x = 287,439,265,710.96/622,674.80
  6. Step 6: Final answer
    x = 461,620.20

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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.