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Finding the Fourth Proportional to 573,356.10, 791,162.66 and 315,190.48

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Solution

The fourth proportional to 573,356.10, 791,162.66 and 315,190.48 is: 434,925.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,356.10 : 791,162.66 = 315,190.48 : x
  2. Step 2: Convert to fraction form
    573,356.10/791,162.66 = 315,190.48/x
  3. Step 3: Cross multiply
    573,356.10x = 791,162.66 × 315,190.48
  4. Step 4: Simplify right side
    573,356.10x = 249,366,938,563.48
  5. Step 5: Solve for x
    x = 249,366,938,563.48/573,356.10
  6. Step 6: Final answer
    x = 434,925.06

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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.