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Finding the Fourth Proportional to 191,100.30, 286,708.05 and 102,396.30

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Solution

The fourth proportional to 191,100.30, 286,708.05 and 102,396.30 is: 153,625.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,100.30 : 286,708.05 = 102,396.30 : x
  2. Step 2: Convert to fraction form
    191,100.30/286,708.05 = 102,396.30/x
  3. Step 3: Cross multiply
    191,100.30x = 286,708.05 × 102,396.30
  4. Step 4: Simplify right side
    191,100.30x = 29,357,843,500.22
  5. Step 5: Solve for x
    x = 29,357,843,500.22/191,100.30
  6. Step 6: Final answer
    x = 153,625.31

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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.