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Finding the Fourth Proportional to 455,463.84, 683,220.64 and 189,251.20

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Solution

The fourth proportional to 455,463.84, 683,220.64 and 189,251.20 is: 283,887.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,463.84 : 683,220.64 = 189,251.20 : x
  2. Step 2: Convert to fraction form
    455,463.84/683,220.64 = 189,251.20/x
  3. Step 3: Cross multiply
    455,463.84x = 683,220.64 × 189,251.20
  4. Step 4: Simplify right side
    455,463.84x = 129,300,325,984.77
  5. Step 5: Solve for x
    x = 129,300,325,984.77/455,463.84
  6. Step 6: Final answer
    x = 283,887.14

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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.