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Finding the Fourth Proportional to 455,564.70, 683,347.05 and 433,791.90

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Solution

The fourth proportional to 455,564.70, 683,347.05 and 433,791.90 is: 650,687.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,564.70 : 683,347.05 = 433,791.90 : x
  2. Step 2: Convert to fraction form
    455,564.70/683,347.05 = 433,791.90/x
  3. Step 3: Cross multiply
    455,564.70x = 683,347.05 × 433,791.90
  4. Step 4: Simplify right side
    455,564.70x = 296,430,415,178.90
  5. Step 5: Solve for x
    x = 296,430,415,178.90/455,564.70
  6. Step 6: Final answer
    x = 650,687.85

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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.