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Finding the Fourth Proportional to 573,131.35, 790,928.43 and 315,036.48

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Solution

The fourth proportional to 573,131.35, 790,928.43 and 315,036.48 is: 434,754.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,131.35 : 790,928.43 = 315,036.48 : x
  2. Step 2: Convert to fraction form
    573,131.35/790,928.43 = 315,036.48/x
  3. Step 3: Cross multiply
    573,131.35x = 790,928.43 × 315,036.48
  4. Step 4: Simplify right side
    573,131.35x = 249,171,308,519.13
  5. Step 5: Solve for x
    x = 249,171,308,519.13/573,131.35
  6. Step 6: Final answer
    x = 434,754.28

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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.