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Finding the Fourth Proportional to 289,807.93, 434,837.04 and 156,781.90

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Solution

The fourth proportional to 289,807.93, 434,837.04 and 156,781.90 is: 235,240.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,807.93 : 434,837.04 = 156,781.90 : x
  2. Step 2: Convert to fraction form
    289,807.93/434,837.04 = 156,781.90/x
  3. Step 3: Cross multiply
    289,807.93x = 434,837.04 × 156,781.90
  4. Step 4: Simplify right side
    289,807.93x = 68,174,577,321.58
  5. Step 5: Solve for x
    x = 68,174,577,321.58/289,807.93
  6. Step 6: Final answer
    x = 235,240.55

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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.