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Finding the Fourth Proportional to 191,163.68, 263,801.59 and 103,946.90

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Solution

The fourth proportional to 191,163.68, 263,801.59 and 103,946.90 is: 143,444.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,163.68 : 263,801.59 = 103,946.90 : x
  2. Step 2: Convert to fraction form
    191,163.68/263,801.59 = 103,946.90/x
  3. Step 3: Cross multiply
    191,163.68x = 263,801.59 × 103,946.90
  4. Step 4: Simplify right side
    191,163.68x = 27,421,357,895.21
  5. Step 5: Solve for x
    x = 27,421,357,895.21/191,163.68
  6. Step 6: Final answer
    x = 143,444.39

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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.