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Finding the Fourth Proportional to 524,612.40, 786,918.60 and 480,872.40

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Solution

The fourth proportional to 524,612.40, 786,918.60 and 480,872.40 is: 721,308.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,612.40 : 786,918.60 = 480,872.40 : x
  2. Step 2: Convert to fraction form
    524,612.40/786,918.60 = 480,872.40/x
  3. Step 3: Cross multiply
    524,612.40x = 786,918.60 × 480,872.40
  4. Step 4: Simplify right side
    524,612.40x = 378,407,435,786.64
  5. Step 5: Solve for x
    x = 378,407,435,786.64/524,612.40
  6. Step 6: Final answer
    x = 721,308.60

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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.