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Finding the Fourth Proportional to 705,316.85, 973,337.16 and 399,393.14

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Solution

The fourth proportional to 705,316.85, 973,337.16 and 399,393.14 is: 551,162.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,316.85 : 973,337.16 = 399,393.14 : x
  2. Step 2: Convert to fraction form
    705,316.85/973,337.16 = 399,393.14/x
  3. Step 3: Cross multiply
    705,316.85x = 973,337.16 × 399,393.14
  4. Step 4: Simplify right side
    705,316.85x = 388,744,184,611.08
  5. Step 5: Solve for x
    x = 388,744,184,611.08/705,316.85
  6. Step 6: Final answer
    x = 551,162.48

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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.