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Finding the Fourth Proportional to 335,412.90, 501,807.15 and 217,314.90

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Solution

The fourth proportional to 335,412.90, 501,807.15 and 217,314.90 is: 325,122.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,412.90 : 501,807.15 = 217,314.90 : x
  2. Step 2: Convert to fraction form
    335,412.90/501,807.15 = 217,314.90/x
  3. Step 3: Cross multiply
    335,412.90x = 501,807.15 × 217,314.90
  4. Step 4: Simplify right side
    335,412.90x = 109,050,170,621.54
  5. Step 5: Solve for x
    x = 109,050,170,621.54/335,412.90
  6. Step 6: Final answer
    x = 325,122.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.