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Finding the Fourth Proportional to 569,821.55, 786,300.89 and 315,167.27

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Solution

The fourth proportional to 569,821.55, 786,300.89 and 315,167.27 is: 434,901.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,821.55 : 786,300.89 = 315,167.27 : x
  2. Step 2: Convert to fraction form
    569,821.55/786,300.89 = 315,167.27/x
  3. Step 3: Cross multiply
    569,821.55x = 786,300.89 × 315,167.27
  4. Step 4: Simplify right side
    569,821.55x = 247,816,299,392.53
  5. Step 5: Solve for x
    x = 247,816,299,392.53/569,821.55
  6. Step 6: Final answer
    x = 434,901.60

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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.