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Finding the Fourth Proportional to 119,567.76, 178,509.42 and 91,338.96

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Solution

The fourth proportional to 119,567.76, 178,509.42 and 91,338.96 is: 136,365.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,567.76 : 178,509.42 = 91,338.96 : x
  2. Step 2: Convert to fraction form
    119,567.76/178,509.42 = 91,338.96/x
  3. Step 3: Cross multiply
    119,567.76x = 178,509.42 × 91,338.96
  4. Step 4: Simplify right side
    119,567.76x = 16,304,864,773.00
  5. Step 5: Solve for x
    x = 16,304,864,773.00/119,567.76
  6. Step 6: Final answer
    x = 136,365.06

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.