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Finding the Fourth Proportional to 353,411.12, 530,114.19 and 143,046.02

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Solution

The fourth proportional to 353,411.12, 530,114.19 and 143,046.02 is: 214,568.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,411.12 : 530,114.19 = 143,046.02 : x
  2. Step 2: Convert to fraction form
    353,411.12/530,114.19 = 143,046.02/x
  3. Step 3: Cross multiply
    353,411.12x = 530,114.19 × 143,046.02
  4. Step 4: Simplify right side
    353,411.12x = 75,830,722,374.45
  5. Step 5: Solve for x
    x = 75,830,722,374.45/353,411.12
  6. Step 6: Final answer
    x = 214,568.02

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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.