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Finding the Fourth Proportional to 707,986.46, 1,061,342 and 258,391.86

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Solution

The fourth proportional to 707,986.46, 1,061,342 and 258,391.86 is: 387,355.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,986.46 : 1,061,342 = 258,391.86 : x
  2. Step 2: Convert to fraction form
    707,986.46/1,061,342 = 258,391.86/x
  3. Step 3: Cross multiply
    707,986.46x = 1,061,342 × 258,391.86
  4. Step 4: Simplify right side
    707,986.46x = 274,242,133,476.12
  5. Step 5: Solve for x
    x = 274,242,133,476.12/707,986.46
  6. Step 6: Final answer
    x = 387,355.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.