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Finding the Fourth Proportional to 622,997.60, 934,496.40 and 410,421.20

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Solution

The fourth proportional to 622,997.60, 934,496.40 and 410,421.20 is: 615,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,997.60 : 934,496.40 = 410,421.20 : x
  2. Step 2: Convert to fraction form
    622,997.60/934,496.40 = 410,421.20/x
  3. Step 3: Cross multiply
    622,997.60x = 934,496.40 × 410,421.20
  4. Step 4: Simplify right side
    622,997.60x = 383,537,133,883.68
  5. Step 5: Solve for x
    x = 383,537,133,883.68/622,997.60
  6. Step 6: Final answer
    x = 615,631.80

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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.