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Finding the Fourth Proportional to 706,246.88, 974,639.92 and 383,978.64

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Solution

The fourth proportional to 706,246.88, 974,639.92 and 383,978.64 is: 529,900.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,246.88 : 974,639.92 = 383,978.64 : x
  2. Step 2: Convert to fraction form
    706,246.88/974,639.92 = 383,978.64/x
  3. Step 3: Cross multiply
    706,246.88x = 974,639.92 × 383,978.64
  4. Step 4: Simplify right side
    706,246.88x = 374,240,910,971.31
  5. Step 5: Solve for x
    x = 374,240,910,971.31/706,246.88
  6. Step 6: Final answer
    x = 529,900.98

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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.