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Finding the Fourth Proportional to 517,243.77, 713,789.55 and 290,889.27

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Solution

The fourth proportional to 517,243.77, 713,789.55 and 290,889.27 is: 401,423.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,243.77 : 713,789.55 = 290,889.27 : x
  2. Step 2: Convert to fraction form
    517,243.77/713,789.55 = 290,889.27/x
  3. Step 3: Cross multiply
    517,243.77x = 713,789.55 × 290,889.27
  4. Step 4: Simplify right side
    517,243.77x = 207,633,721,133.13
  5. Step 5: Solve for x
    x = 207,633,721,133.13/517,243.77
  6. Step 6: Final answer
    x = 401,423.34

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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.