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Finding the Fourth Proportional to 530,690.56, 732,361.71 and 288,977.85

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Solution

The fourth proportional to 530,690.56, 732,361.71 and 288,977.85 is: 398,794.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,690.56 : 732,361.71 = 288,977.85 : x
  2. Step 2: Convert to fraction form
    530,690.56/732,361.71 = 288,977.85/x
  3. Step 3: Cross multiply
    530,690.56x = 732,361.71 × 288,977.85
  4. Step 4: Simplify right side
    530,690.56x = 211,636,312,378.12
  5. Step 5: Solve for x
    x = 211,636,312,378.12/530,690.56
  6. Step 6: Final answer
    x = 398,794.19

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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.