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Finding the Fourth Proportional to 520,136.64, 717,763.68 and 293,814.72

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Solution

The fourth proportional to 520,136.64, 717,763.68 and 293,814.72 is: 405,450.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,136.64 : 717,763.68 = 293,814.72 : x
  2. Step 2: Convert to fraction form
    520,136.64/717,763.68 = 293,814.72/x
  3. Step 3: Cross multiply
    520,136.64x = 717,763.68 × 293,814.72
  4. Step 4: Simplify right side
    520,136.64x = 210,889,534,665.37
  5. Step 5: Solve for x
    x = 210,889,534,665.37/520,136.64
  6. Step 6: Final answer
    x = 405,450.26

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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.