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Finding the Fourth Proportional to 705,686.31, 973,776.87 and 399,701.79

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Solution

The fourth proportional to 705,686.31, 973,776.87 and 399,701.79 is: 551,548.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,686.31 : 973,776.87 = 399,701.79 : x
  2. Step 2: Convert to fraction form
    705,686.31/973,776.87 = 399,701.79/x
  3. Step 3: Cross multiply
    705,686.31x = 973,776.87 × 399,701.79
  4. Step 4: Simplify right side
    705,686.31x = 389,220,357,999.60
  5. Step 5: Solve for x
    x = 389,220,357,999.60/705,686.31
  6. Step 6: Final answer
    x = 551,548.69

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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.