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Finding the Fourth Proportional to 689,783.93, 951,894.94 and 383,855.07

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Solution

The fourth proportional to 689,783.93, 951,894.94 and 383,855.07 is: 529,716.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,783.93 : 951,894.94 = 383,855.07 : x
  2. Step 2: Convert to fraction form
    689,783.93/951,894.94 = 383,855.07/x
  3. Step 3: Cross multiply
    689,783.93x = 951,894.94 × 383,855.07
  4. Step 4: Simplify right side
    689,783.93x = 365,389,701,821.39
  5. Step 5: Solve for x
    x = 365,389,701,821.39/689,783.93
  6. Step 6: Final answer
    x = 529,716.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.