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Finding the Fourth Proportional to 107,807.80, 161,711.70 and 60,374.20

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Solution

The fourth proportional to 107,807.80, 161,711.70 and 60,374.20 is: 90,561.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,807.80 : 161,711.70 = 60,374.20 : x
  2. Step 2: Convert to fraction form
    107,807.80/161,711.70 = 60,374.20/x
  3. Step 3: Cross multiply
    107,807.80x = 161,711.70 × 60,374.20
  4. Step 4: Simplify right side
    107,807.80x = 9,763,214,518.14
  5. Step 5: Solve for x
    x = 9,763,214,518.14/107,807.80
  6. Step 6: Final answer
    x = 90,561.30

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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.