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Finding the Fourth Proportional to 455,571.20, 683,356.80 and 433,798.40

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Solution

The fourth proportional to 455,571.20, 683,356.80 and 433,798.40 is: 650,697.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,571.20 : 683,356.80 = 433,798.40 : x
  2. Step 2: Convert to fraction form
    455,571.20/683,356.80 = 433,798.40/x
  3. Step 3: Cross multiply
    455,571.20x = 683,356.80 × 433,798.40
  4. Step 4: Simplify right side
    455,571.20x = 296,439,086,469.12
  5. Step 5: Solve for x
    x = 296,439,086,469.12/455,571.20
  6. Step 6: Final answer
    x = 650,697.60

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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.