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Finding the Fourth Proportional to 107,798.40, 161,390.40 and 104,726.40

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Solution

The fourth proportional to 107,798.40, 161,390.40 and 104,726.40 is: 156,791.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,798.40 : 161,390.40 = 104,726.40 : x
  2. Step 2: Convert to fraction form
    107,798.40/161,390.40 = 104,726.40/x
  3. Step 3: Cross multiply
    107,798.40x = 161,390.40 × 104,726.40
  4. Step 4: Simplify right side
    107,798.40x = 16,901,835,586.56
  5. Step 5: Solve for x
    x = 16,901,835,586.56/107,798.40
  6. Step 6: Final answer
    x = 156,791.15

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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.