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Finding the Fourth Proportional to 530,438.40, 795,139.20 and 474,451.20

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Solution

The fourth proportional to 530,438.40, 795,139.20 and 474,451.20 is: 711,213.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,438.40 : 795,139.20 = 474,451.20 : x
  2. Step 2: Convert to fraction form
    530,438.40/795,139.20 = 474,451.20/x
  3. Step 3: Cross multiply
    530,438.40x = 795,139.20 × 474,451.20
  4. Step 4: Simplify right side
    530,438.40x = 377,254,747,607.04
  5. Step 5: Solve for x
    x = 377,254,747,607.04/530,438.40
  6. Step 6: Final answer
    x = 711,213.12

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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.