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Finding the Fourth Proportional to 455,581.20, 683,371.80 and 433,808.40

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Solution

The fourth proportional to 455,581.20, 683,371.80 and 433,808.40 is: 650,712.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,581.20 : 683,371.80 = 433,808.40 : x
  2. Step 2: Convert to fraction form
    455,581.20/683,371.80 = 433,808.40/x
  3. Step 3: Cross multiply
    455,581.20x = 683,371.80 × 433,808.40
  4. Step 4: Simplify right side
    455,581.20x = 296,452,427,163.12
  5. Step 5: Solve for x
    x = 296,452,427,163.12/455,581.20
  6. Step 6: Final answer
    x = 650,712.60

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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.