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Finding the Fourth Proportional to 520,866.60, 718,792.02 and 294,520.20

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Solution

The fourth proportional to 520,866.60, 718,792.02 and 294,520.20 is: 406,435.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,866.60 : 718,792.02 = 294,520.20 : x
  2. Step 2: Convert to fraction form
    520,866.60/718,792.02 = 294,520.20/x
  3. Step 3: Cross multiply
    520,866.60x = 718,792.02 × 294,520.20
  4. Step 4: Simplify right side
    520,866.60x = 211,698,769,488.80
  5. Step 5: Solve for x
    x = 211,698,769,488.80/520,866.60
  6. Step 6: Final answer
    x = 406,435.68

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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.