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Finding the Fourth Proportional to 270,153.16, 405,229.96 and 70,473.32

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Solution

The fourth proportional to 270,153.16, 405,229.96 and 70,473.32 is: 105,710.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,153.16 : 405,229.96 = 70,473.32 : x
  2. Step 2: Convert to fraction form
    270,153.16/405,229.96 = 70,473.32/x
  3. Step 3: Cross multiply
    270,153.16x = 405,229.96 × 70,473.32
  4. Step 4: Simplify right side
    270,153.16x = 28,557,900,644.67
  5. Step 5: Solve for x
    x = 28,557,900,644.67/270,153.16
  6. Step 6: Final answer
    x = 105,710.04

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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.