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Finding the Fourth Proportional to 706,245.87, 974,638.53 and 383,978.19

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Solution

The fourth proportional to 706,245.87, 974,638.53 and 383,978.19 is: 529,900.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,245.87 : 974,638.53 = 383,978.19 : x
  2. Step 2: Convert to fraction form
    706,245.87/974,638.53 = 383,978.19/x
  3. Step 3: Cross multiply
    706,245.87x = 974,638.53 × 383,978.19
  4. Step 4: Simplify right side
    706,245.87x = 374,239,938,653.66
  5. Step 5: Solve for x
    x = 374,239,938,653.66/706,245.87
  6. Step 6: Final answer
    x = 529,900.36

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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.