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Finding the Fourth Proportional to 689,351.99, 951,282.91 and 383,419.72

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Solution

The fourth proportional to 689,351.99, 951,282.91 and 383,419.72 is: 529,106.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,351.99 : 951,282.91 = 383,419.72 : x
  2. Step 2: Convert to fraction form
    689,351.99/951,282.91 = 383,419.72/x
  3. Step 3: Cross multiply
    689,351.99x = 951,282.91 × 383,419.72
  4. Step 4: Simplify right side
    689,351.99x = 364,740,620,319.47
  5. Step 5: Solve for x
    x = 364,740,620,319.47/689,351.99
  6. Step 6: Final answer
    x = 529,106.50

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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.