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Finding the Fourth Proportional to 705,588.84, 973,792.02 and 399,686.04

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Solution

The fourth proportional to 705,588.84, 973,792.02 and 399,686.04 is: 551,611.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,588.84 : 973,792.02 = 399,686.04 : x
  2. Step 2: Convert to fraction form
    705,588.84/973,792.02 = 399,686.04/x
  3. Step 3: Cross multiply
    705,588.84x = 973,792.02 × 399,686.04
  4. Step 4: Simplify right side
    705,588.84x = 389,211,076,257.40
  5. Step 5: Solve for x
    x = 389,211,076,257.40/705,588.84
  6. Step 6: Final answer
    x = 551,611.72

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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.