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Finding the Fourth Proportional to 517,278.35, 713,761.89 and 290,880.11

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Solution

The fourth proportional to 517,278.35, 713,761.89 and 290,880.11 is: 401,368.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,278.35 : 713,761.89 = 290,880.11 : x
  2. Step 2: Convert to fraction form
    517,278.35/713,761.89 = 290,880.11/x
  3. Step 3: Cross multiply
    517,278.35x = 713,761.89 × 290,880.11
  4. Step 4: Simplify right side
    517,278.35x = 207,619,133,755.70
  5. Step 5: Solve for x
    x = 207,619,133,755.70/517,278.35
  6. Step 6: Final answer
    x = 401,368.31

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1.5x scale

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.