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Finding the Fourth Proportional to 613,553.67, 920,372.58 and 208,581.11

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Solution

The fourth proportional to 613,553.67, 920,372.58 and 208,581.11 is: 312,885.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,553.67 : 920,372.58 = 208,581.11 : x
  2. Step 2: Convert to fraction form
    613,553.67/920,372.58 = 208,581.11/x
  3. Step 3: Cross multiply
    613,553.67x = 920,372.58 × 208,581.11
  4. Step 4: Simplify right side
    613,553.67x = 191,972,333,307.06
  5. Step 5: Solve for x
    x = 191,972,333,307.06/613,553.67
  6. Step 6: Final answer
    x = 312,885.97

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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.