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Finding the Fourth Proportional to 483,209.40, 724,814.10 and 452,105.40

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Solution

The fourth proportional to 483,209.40, 724,814.10 and 452,105.40 is: 678,158.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,209.40 : 724,814.10 = 452,105.40 : x
  2. Step 2: Convert to fraction form
    483,209.40/724,814.10 = 452,105.40/x
  3. Step 3: Cross multiply
    483,209.40x = 724,814.10 × 452,105.40
  4. Step 4: Simplify right side
    483,209.40x = 327,692,368,606.14
  5. Step 5: Solve for x
    x = 327,692,368,606.14/483,209.40
  6. Step 6: Final answer
    x = 678,158.10

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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.