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Finding the Fourth Proportional to 689,125.79, 950,994.37 and 383,195.63

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Solution

The fourth proportional to 689,125.79, 950,994.37 and 383,195.63 is: 528,810.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,125.79 : 950,994.37 = 383,195.63 : x
  2. Step 2: Convert to fraction form
    689,125.79/950,994.37 = 383,195.63/x
  3. Step 3: Cross multiply
    689,125.79x = 950,994.37 × 383,195.63
  4. Step 4: Simplify right side
    689,125.79x = 364,416,884,245.74
  5. Step 5: Solve for x
    x = 364,416,884,245.74/689,125.79
  6. Step 6: Final answer
    x = 528,810.40

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Double scale
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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.