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Finding the Fourth Proportional to 107,417.71, 160,973.81 and 79,115.20

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Solution

The fourth proportional to 107,417.71, 160,973.81 and 79,115.20 is: 118,560.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,417.71 : 160,973.81 = 79,115.20 : x
  2. Step 2: Convert to fraction form
    107,417.71/160,973.81 = 79,115.20/x
  3. Step 3: Cross multiply
    107,417.71x = 160,973.81 × 79,115.20
  4. Step 4: Simplify right side
    107,417.71x = 12,735,474,671.58
  5. Step 5: Solve for x
    x = 12,735,474,671.58/107,417.71
  6. Step 6: Final answer
    x = 118,560.29

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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.