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Finding the Fourth Proportional to 573,114.96, 790,896.42 and 315,009

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Solution

The fourth proportional to 573,114.96, 790,896.42 and 315,009 is: 434,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,114.96 : 790,896.42 = 315,009 : x
  2. Step 2: Convert to fraction form
    573,114.96/790,896.42 = 315,009/x
  3. Step 3: Cross multiply
    573,114.96x = 790,896.42 × 315,009
  4. Step 4: Simplify right side
    573,114.96x = 249,139,490,367.78
  5. Step 5: Solve for x
    x = 249,139,490,367.78/573,114.96
  6. Step 6: Final answer
    x = 434,711.20

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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.