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Finding the Fourth Proportional to 104,897.81, 157,412.33 and 42,568.31

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Solution

The fourth proportional to 104,897.81, 157,412.33 and 42,568.31 is: 63,879.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,897.81 : 157,412.33 = 42,568.31 : x
  2. Step 2: Convert to fraction form
    104,897.81/157,412.33 = 42,568.31/x
  3. Step 3: Cross multiply
    104,897.81x = 157,412.33 × 42,568.31
  4. Step 4: Simplify right side
    104,897.81x = 6,700,776,861.26
  5. Step 5: Solve for x
    x = 6,700,776,861.26/104,897.81
  6. Step 6: Final answer
    x = 63,879.09

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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.