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Finding the Fourth Proportional to 573,131.70, 790,929.96 and 315,032.54

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Solution

The fourth proportional to 573,131.70, 790,929.96 and 315,032.54 is: 434,749.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,131.70 : 790,929.96 = 315,032.54 : x
  2. Step 2: Convert to fraction form
    573,131.70/790,929.96 = 315,032.54/x
  3. Step 3: Cross multiply
    573,131.70x = 790,929.96 × 315,032.54
  4. Step 4: Simplify right side
    573,131.70x = 249,168,674,260.90
  5. Step 5: Solve for x
    x = 249,168,674,260.90/573,131.70
  6. Step 6: Final answer
    x = 434,749.42

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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.