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Finding the Fourth Proportional to 520,238.77, 717,987.79 and 293,898.85

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Solution

The fourth proportional to 520,238.77, 717,987.79 and 293,898.85 is: 405,613.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,238.77 : 717,987.79 = 293,898.85 : x
  2. Step 2: Convert to fraction form
    520,238.77/717,987.79 = 293,898.85/x
  3. Step 3: Cross multiply
    520,238.77x = 717,987.79 × 293,898.85
  4. Step 4: Simplify right side
    520,238.77x = 211,015,784,325.55
  5. Step 5: Solve for x
    x = 211,015,784,325.55/520,238.77
  6. Step 6: Final answer
    x = 405,613.34

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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.