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Finding the Fourth Proportional to 100,907.86, 151,360.16 and 34,394.30

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Solution

The fourth proportional to 100,907.86, 151,360.16 and 34,394.30 is: 51,590.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,907.86 : 151,360.16 = 34,394.30 : x
  2. Step 2: Convert to fraction form
    100,907.86/151,360.16 = 34,394.30/x
  3. Step 3: Cross multiply
    100,907.86x = 151,360.16 × 34,394.30
  4. Step 4: Simplify right side
    100,907.86x = 5,205,926,751.09
  5. Step 5: Solve for x
    x = 5,205,926,751.09/100,907.86
  6. Step 6: Final answer
    x = 51,590.89

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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.